68180156 has 12 divisors (see below), whose sum is σ = 130162200. Its totient is φ = 30990960.

The previous prime is 68180153. The next prime is 68180179. The reversal of 68180156 is 65108186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68180153) 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, 774731 + ... + 774818.

It is an arithmetic number, because the mean of its divisors is an integer number (10846850).

Almost surely, 2^68180156 is an apocalyptic number.

It is an amenable number.

68180156 is a deficient number, since it is larger than the sum of its proper divisors (61982044).

68180156 is a wasteful number, since it uses less digits than its factorization.

68180156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549564 (or 1549562 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 68180156 is about 8257.1275877269. The cubic root of 68180156 is about 408.5256504974.

The spelling of 68180156 in words is "sixty-eight million, one hundred eighty thousand, one hundred fifty-six".