Search a number
-
+
68797208437 = 233295266989
BaseRepresentation
bin100000000010010100…
…0100001011101110101
320120120121002022000221
41000010220201131311
52111344041132222
651334402534341
74653600423466
oct1000450413565
9216517068027
1068797208437
11271a4259a61
12114000673b1
1366451b6679
143488d9ad6d
151bc9c230c7
hex1004a21775

68797208437 has 4 divisors (see below), whose sum is σ = 69092475660. Its totient is φ = 68501941216.

The previous prime is 68797208411. The next prime is 68797208497. The reversal of 68797208437 is 73480279786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14486770321 + 54310438116 = 120361^2 + 233046^2 .

It is a cyclic number.

It is not a de Polignac number, because 68797208437 - 27 = 68797208309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68797208497) 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, 147633262 + ... + 147633727.

It is an arithmetic number, because the mean of its divisors is an integer number (17273118915).

Almost surely, 268797208437 is an apocalyptic number.

It is an amenable number.

68797208437 is a deficient number, since it is larger than the sum of its proper divisors (295267223).

68797208437 is a wasteful number, since it uses less digits than its factorization.

68797208437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295267222.

The product of its (nonzero) digits is 28449792, while the sum is 61.

The spelling of 68797208437 in words is "sixty-eight billion, seven hundred ninety-seven million, two hundred eight thousand, four hundred thirty-seven".

Divisors: 1 233 295266989 68797208437