68158156 has 12 divisors (see below), whose sum is σ = 130120200. Its totient is φ = 30980960.

The previous prime is 68158141. The next prime is 68158169. The reversal of 68158156 is 65185186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774481 + ... + 774568.

It is an arithmetic number, because the mean of its divisors is an integer number (10843350).

Almost surely, 2^68158156 is an apocalyptic number.

It is an amenable number.

68158156 is a deficient number, since it is larger than the sum of its proper divisors (61962044).

68158156 is a wasteful number, since it uses less digits than its factorization.

68158156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549064 (or 1549062 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 68158156 is about 8255.7952978499. The cubic root of 68158156 is about 408.4817054960.

The spelling of 68158156 in words is "sixty-eight million, one hundred fifty-eight thousand, one hundred fifty-six".