156666216 has 32 divisors (see below), whose sum is σ = 447618240. Its totient is φ = 44761728.

The previous prime is 156666161. The next prime is 156666233. The reversal of 156666216 is 612666651.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466101 + ... + 466436.

It is an arithmetic number, because the mean of its divisors is an integer number (13988070).

Almost surely, 2^156666216 is an apocalyptic number.

It is an amenable number.

156666216 is an abundant number, since it is smaller than the sum of its proper divisors (290952024).

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

156666216 is a wasteful number, since it uses less digits than its factorization.

156666216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932553 (or 932549 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 156666216 is about 12516.6375676537. The cubic root of 156666216 is about 539.0864939221.

The spelling of 156666216 in words is "one hundred fifty-six million, six hundred sixty-six thousand, two hundred sixteen".