649495133 has 8 divisors (see below), whose sum is σ = 743204160. Its totient is φ = 556017120.

The previous prime is 649495127. The next prime is 649495141. The reversal of 649495133 is 331594946.

649495133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 649495133 - 2⁴ = 649495117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649495123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51683 + ... + 63008.

It is an arithmetic number, because the mean of its divisors is an integer number (92900520).

Almost surely, 2^649495133 is an apocalyptic number.

It is an amenable number.

649495133 is a deficient number, since it is larger than the sum of its proper divisors (93709027).

649495133 is a wasteful number, since it uses less digits than its factorization.

649495133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115507.

The product of its digits is 349920, while the sum is 44.

The square root of 649495133 is about 25485.1943881148. The cubic root of 649495133 is about 866.0147726147.

The spelling of 649495133 in words is "six hundred forty-nine million, four hundred ninety-five thousand, one hundred thirty-three".