671164 has 12 divisors (see below), whose sum is σ = 1264984. Its totient is φ = 309744.

The previous prime is 671161. The next prime is 671189. The reversal of 671164 is 461176.

It is a happy number.

It is a super-2 number, since 2×671164² = 900922229792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671161) 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, 6402 + ... + 6505.

2⁶⁷¹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

671164 is a deficient number, since it is larger than the sum of its proper divisors (593820).

671164 is a wasteful number, since it uses less digits than its factorization.

671164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924 (or 12922 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 671164 is about 819.2459948025. The cubic root of 671164 is about 87.5540455228.

The spelling of 671164 in words is "six hundred seventy-one thousand, one hundred sixty-four".