68157808 has 10 divisors (see below), whose sum is σ = 132055784. Its totient is φ = 34078896.

The previous prime is 68157797. The next prime is 68157821. The reversal of 68157808 is 80875186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129916 + ... + 2129947.

Almost surely, 2^68157808 is an apocalyptic number.

It is an amenable number.

68157808 is a deficient number, since it is larger than the sum of its proper divisors (63897976).

68157808 is a wasteful number, since it uses less digits than its factorization.

68157808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259871 (or 4259865 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 68157808 is about 8255.7742217190. The cubic root of 68157808 is about 408.4810102900.

The spelling of 68157808 in words is "sixty-eight million, one hundred fifty-seven thousand, eight hundred eight".