Search a number
-
+
206010769 = 355757917
BaseRepresentation
bin11000100011101…
…11100110010001
3112100122102122111
430101313212101
5410214321034
632235305321
75051030326
oct1421674621
9470572574
10206010769
11a6318a38
1258bab241
13338b0183
141d508b4d
1513145364
hexc477991

206010769 has 4 divisors (see below), whose sum is σ = 206072244. Its totient is φ = 205949296.

The previous prime is 206010767. The next prime is 206010781. The reversal of 206010769 is 967010602.

206010769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 967010602 = 2483505301.

It can be written as a sum of positive squares in 2 ways, for example, as 75777025 + 130233744 = 8705^2 + 11412^2 .

It is a cyclic number.

It is not a de Polignac number, because 206010769 - 21 = 206010767 is a prime.

It is a super-2 number, since 2×2060107692 = 84880873887942722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206010769.

It is not an unprimeable number, because it can be changed into a prime (206010767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25402 + ... + 32515.

It is an arithmetic number, because the mean of its divisors is an integer number (51518061).

Almost surely, 2206010769 is an apocalyptic number.

It is an amenable number.

206010769 is a deficient number, since it is larger than the sum of its proper divisors (61475).

206010769 is an equidigital number, since it uses as much as digits as its factorization.

206010769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61474.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 206010769 is about 14353.0752453960. The cubic root of 206010769 is about 590.6043496191.

The spelling of 206010769 in words is "two hundred six million, ten thousand, seven hundred sixty-nine".

Divisors: 1 3557 57917 206010769