649235165 has 16 divisors (see below), whose sum is σ = 783797040. Its totient is φ = 516257280.

The previous prime is 649235137. The next prime is 649235177. The reversal of 649235165 is 561532946.

It can be written as a sum of positive squares in 8 ways, for example, as 188403076 + 460832089 = 13726^2 + 21467^2 .

It is not a de Polignac number, because 649235165 - 2⁸ = 649234909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051937 + ... + 1052553.

It is an arithmetic number, because the mean of its divisors is an integer number (48987315).

Almost surely, 2^649235165 is an apocalyptic number.

It is an amenable number.

649235165 is a deficient number, since it is larger than the sum of its proper divisors (134561875).

649235165 is a wasteful number, since it uses less digits than its factorization.

649235165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its digits is 194400, while the sum is 41.

The square root of 649235165 is about 25480.0935045380. The cubic root of 649235165 is about 865.8992130252.

The spelling of 649235165 in words is "six hundred forty-nine million, two hundred thirty-five thousand, one hundred sixty-five".