166713372 has 72 divisors (see below), whose sum is σ = 506979200. Its totient is φ = 45124128.

The previous prime is 166713311. The next prime is 166713377. The reversal of 166713372 is 273317661.

It is a super-2 number, since 2×166713372² = 55586696807220768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166713377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12622 + ... + 22197.

Almost surely, 2^166713372 is an apocalyptic number.

166713372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166713372 is an abundant number, since it is smaller than the sum of its proper divisors (340265828).

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

166713372 is a wasteful number, since it uses less digits than its factorization.

166713372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34855 (or 34850 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 166713372 is about 12911.7532504304. The cubic root of 166713372 is about 550.3726092189.

The spelling of 166713372 in words is "one hundred sixty-six million, seven hundred thirteen thousand, three hundred seventy-two".