166647472 has 20 divisors (see below), whose sum is σ = 323104320. Its totient is φ = 83265728.

The previous prime is 166647469. The next prime is 166647487. The reversal of 166647472 is 274746661.

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, 28929 + ... + 34207.

It is an arithmetic number, because the mean of its divisors is an integer number (16155216).

Almost surely, 2^166647472 is an apocalyptic number.

It is an amenable number.

166647472 is a deficient number, since it is larger than the sum of its proper divisors (156456848).

166647472 is a wasteful number, since it uses less digits than its factorization.

166647472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7260 (or 7254 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 166647472 is about 12909.2010597093. The cubic root of 166647472 is about 550.3000808737.

The spelling of 166647472 in words is "one hundred sixty-six million, six hundred forty-seven thousand, four hundred seventy-two".