649164 has 24 divisors (see below), whose sum is σ = 1548288. Its totient is φ = 211600.

The previous prime is 649157. The next prime is 649183. The reversal of 649164 is 461946.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (64512).

2⁶⁴⁹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

649164 is an abundant number, since it is smaller than the sum of its proper divisors (899124).

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

649164 is a wasteful number, since it uses less digits than its factorization.

649164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1203 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 649164 is about 805.7071428255. The cubic root of 649164 is about 86.5867573761.

It can be divided in two parts, 6491 and 64, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 649164 in words is "six hundred forty-nine thousand, one hundred sixty-four".