170661172 has 48 divisors (see below), whose sum is σ = 341510400. Its totient is φ = 73906560.

The previous prime is 170661157. The next prime is 170661199. The reversal of 170661172 is 271166071.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99958 + ... + 101650.

It is an arithmetic number, because the mean of its divisors is an integer number (7114800).

Almost surely, 2^170661172 is an apocalyptic number.

It is an amenable number.

170661172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

170661172 is a wasteful number, since it uses less digits than its factorization.

170661172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 170661172 is about 13063.7349942503. The cubic root of 170661172 is about 554.6830666212.

The spelling of 170661172 in words is "one hundred seventy million, six hundred sixty-one thousand, one hundred seventy-two".