171156864 has 64 divisors (see below), whose sum is σ = 478584000. Its totient is φ = 54047232.

The previous prime is 171156863. The next prime is 171156889. The reversal of 171156864 is 468651171.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171156863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4434 + ... + 19025.

It is an arithmetic number, because the mean of its divisors is an integer number (7477875).

Almost surely, 2^171156864 is an apocalyptic number.

It is an amenable number.

171156864 is an abundant number, since it is smaller than the sum of its proper divisors (307427136).

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

171156864 is a wasteful number, since it uses less digits than its factorization.

171156864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23495 (or 23483 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 171156864 is about 13082.6933006931. The cubic root of 171156864 is about 555.2195803485.

The spelling of 171156864 in words is "one hundred seventy-one million, one hundred fifty-six thousand, eight hundred sixty-four".