180664 has 16 divisors (see below), whose sum is σ = 369720. Its totient is φ = 82080.

The previous prime is 180647. The next prime is 180667. The reversal of 180664 is 466081.

180664 = T₁₁₇ + T₁₁₈ + ... + T₁₃₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939 + ... + 1114.

2¹⁸⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

180664 is an abundant number, since it is smaller than the sum of its proper divisors (189056).

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

180664 is a wasteful number, since it uses less digits than its factorization.

180664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070 (or 2066 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 180664 is about 425.0458798765. The cubic root of 180664 is about 56.5315040842.

The spelling of 180664 in words is "one hundred eighty thousand, six hundred sixty-four".