Search a number
-
+
69746689 = 349119979
BaseRepresentation
bin1000010100001…
…00000000000001
311212020111110201
410022010000001
5120323343224
610530525201
71504560055
oct412040001
9155214421
1069746689
11364087a1
121b436801
13115b043c
149397c65
1561caa44
hex4284001

69746689 has 4 divisors (see below), whose sum is σ = 69770160. Its totient is φ = 69723220.

The previous prime is 69746687. The next prime is 69746707. The reversal of 69746689 is 98664796.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69746689 - 21 = 69746687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69746681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6499 + ... + 13480.

It is an arithmetic number, because the mean of its divisors is an integer number (17442540).

It is a Proth number, since it is equal to 4257 ⋅ 214 + 1 and 4257 < 214.

Almost surely, 269746689 is an apocalyptic number.

It is an amenable number.

69746689 is a deficient number, since it is larger than the sum of its proper divisors (23471).

69746689 is a wasteful number, since it uses less digits than its factorization.

69746689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23470.

The product of its digits is 3919104, while the sum is 55.

The square root of 69746689 is about 8351.4483175076. The cubic root of 69746689 is about 411.6308020209.

The spelling of 69746689 in words is "sixty-nine million, seven hundred forty-six thousand, six hundred eighty-nine".

Divisors: 1 3491 19979 69746689