68156874 has 12 divisors (see below), whose sum is σ = 147673266. Its totient is φ = 22718952.

The previous prime is 68156867. The next prime is 68156897. The reversal of 68156874 is 47865186.

It is a happy number.

68156874 is a `hidden beast` number, since 6 + 81 + 568 + 7 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38378025 + 29778849 = 6195^2 + 5457^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1893229 + ... + 1893264.

Almost surely, 2^68156874 is an apocalyptic number.

68156874 is an abundant number, since it is smaller than the sum of its proper divisors (79516392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68156874 is a wasteful number, since it uses less digits than its factorization.

68156874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786501 (or 3786498 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 68156874 is about 8255.7176550558. The cubic root of 68156874 is about 408.4791444093.

It can be divided in two parts, 6815 and 6874, that added together give a square (13689 = 117²).

The spelling of 68156874 in words is "sixty-eight million, one hundred fifty-six thousand, eight hundred seventy-four".