649349533 has 4 divisors (see below), whose sum is σ = 742113760. Its totient is φ = 556585308.

The previous prime is 649349521. The next prime is 649349549. The reversal of 649349533 is 335943946.

649349533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 649349533 - 2²⁵ = 615795101 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 (649349573) 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, 46382103 + ... + 46382116.

It is an arithmetic number, because the mean of its divisors is an integer number (185528440).

Almost surely, 2^649349533 is an apocalyptic number.

It is an amenable number.

649349533 is a deficient number, since it is larger than the sum of its proper divisors (92764227).

649349533 is an equidigital number, since it uses as much as digits as its factorization.

649349533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92764226.

The product of its digits is 1049760, while the sum is 46.

The square root of 649349533 is about 25482.3376674904. The cubic root of 649349533 is about 865.9500550785.

The spelling of 649349533 in words is "six hundred forty-nine million, three hundred forty-nine thousand, five hundred thirty-three".