156666472 has 32 divisors (see below), whose sum is σ = 297266400. Its totient is φ = 77402304.

The previous prime is 156666469. The next prime is 156666479. The reversal of 156666472 is 274666651.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (156666479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413179 + ... + 413557.

It is an arithmetic number, because the mean of its divisors is an integer number (9289575).

Almost surely, 2^156666472 is an apocalyptic number.

It is an amenable number.

156666472 is a deficient number, since it is larger than the sum of its proper divisors (140599928).

156666472 is a wasteful number, since it uses less digits than its factorization.

156666472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 861 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 156666472 is about 12516.6477940381. The cubic root of 156666472 is about 539.0867875529.

The spelling of 156666472 in words is "one hundred fifty-six million, six hundred sixty-six thousand, four hundred seventy-two".