68690872 has 16 divisors (see below), whose sum is σ = 128964240. Its totient is φ = 34300416.

The previous prime is 68690837. The next prime is 68690873. The reversal of 68690872 is 27809686.

It is a super-2 number, since 2×68690872² = 9436871792240768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68690873) 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, 1368 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (8060265).

Almost surely, 2^68690872 is an apocalyptic number.

It is an amenable number.

68690872 is a deficient number, since it is larger than the sum of its proper divisors (60273368).

68690872 is a wasteful number, since it uses less digits than its factorization.

68690872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11262 (or 11258 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 68690872 is about 8287.9956563695. The cubic root of 68690872 is about 409.5431596083.

The spelling of 68690872 in words is "sixty-eight million, six hundred ninety thousand, eight hundred seventy-two".