156215668 has 12 divisors (see below), whose sum is σ = 312431392. Its totient is φ = 66949560.

The previous prime is 156215621. The next prime is 156215677. The reversal of 156215668 is 866512651.

156215668 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 156215668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789538 + ... + 2789593.

Almost surely, 2^156215668 is an apocalyptic number.

It is an amenable number.

156215668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

156215668 is a wasteful number, since it uses less digits than its factorization.

156215668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579142 (or 5579140 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 156215668 is about 12498.6266445558. The cubic root of 156215668 is about 538.5692210574.

The spelling of 156215668 in words is "one hundred fifty-six million, two hundred fifteen thousand, six hundred sixty-eight".