172374666 has 32 divisors (see below), whose sum is σ = 360676800. Its totient is φ = 54848640.

The previous prime is 172374641. The next prime is 172374677. The reversal of 172374666 is 666473271.

It is a happy number.

It is a super-2 number, since 2×172374666² = 59426050957223112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9921 + ... + 21051.

It is an arithmetic number, because the mean of its divisors is an integer number (11271150).

Almost surely, 2^172374666 is an apocalyptic number.

172374666 is an abundant number, since it is smaller than the sum of its proper divisors (188302134).

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

172374666 is a wasteful number, since it uses less digits than its factorization.

172374666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11254.

The product of its digits is 254016, while the sum is 42.

The square root of 172374666 is about 13129.1532857226. The cubic root of 172374666 is about 556.5332879119.

The spelling of 172374666 in words is "one hundred seventy-two million, three hundred seventy-four thousand, six hundred sixty-six".