101660172 has 24 divisors (see below), whose sum is σ = 240749376. Its totient is φ = 33380688.

The previous prime is 101660149. The next prime is 101660177. The reversal of 101660172 is 271066101.

It is not an unprimeable number, because it can be changed into a prime (101660177) 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, 62418 + ... + 64025.

It is an arithmetic number, because the mean of its divisors is an integer number (10031224).

Almost surely, 2^101660172 is an apocalyptic number.

101660172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101660172 is an abundant number, since it is smaller than the sum of its proper divisors (139089204).

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

101660172 is a wasteful number, since it uses less digits than its factorization.

101660172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126517 (or 126515 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 101660172 is about 10082.6669091069. Note that the first 3 decimals coincide. The cubic root of 101660172 is about 466.7134105105.

The spelling of 101660172 in words is "one hundred one million, six hundred sixty thousand, one hundred seventy-two".