171649164 has 12 divisors (see below), whose sum is σ = 400514744. Its totient is φ = 57216384.

The previous prime is 171649157. The next prime is 171649189. The reversal of 171649164 is 461946171.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7152037 + ... + 7152060.

Almost surely, 2^171649164 is an apocalyptic number.

It is an amenable number.

171649164 is an abundant number, since it is smaller than the sum of its proper divisors (228865580).

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

171649164 is a wasteful number, since it uses less digits than its factorization.

171649164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14304104 (or 14304102 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 171649164 is about 13101.4947238855. The cubic root of 171649164 is about 555.7513984443.

The spelling of 171649164 in words is "one hundred seventy-one million, six hundred forty-nine thousand, one hundred sixty-four".