166667472 has 30 divisors (see below), whose sum is σ = 466437842. Its totient is φ = 55555776.

The previous prime is 166667467. The next prime is 166667489. The reversal of 166667472 is 274766661.

It is a happy number.

166667472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 165791376 + 876096 = 12876^2 + 936^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578563 + ... + 578850.

Almost surely, 2^166667472 is an apocalyptic number.

166667472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166667472 is an abundant number, since it is smaller than the sum of its proper divisors (299770370).

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

166667472 is a wasteful number, since it uses less digits than its factorization.

166667472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157427 (or 1157418 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 166667472 is about 12909.9756777463. The cubic root of 166667472 is about 550.3220945317.

The spelling of 166667472 in words is "one hundred sixty-six million, six hundred sixty-seven thousand, four hundred seventy-two".