649320886 has 16 divisors (see below), whose sum is σ = 995716800. Its totient is φ = 317429440.

The previous prime is 649320871. The next prime is 649321033. The reversal of 649320886 is 688023946.

It is a happy number.

It is a super-2 number, since 2×649320886² = 843235225991649992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108090 + ... + 113938.

It is an arithmetic number, because the mean of its divisors is an integer number (62232300).

Almost surely, 2^649320886 is an apocalyptic number.

649320886 is a deficient number, since it is larger than the sum of its proper divisors (346395914).

649320886 is a wasteful number, since it uses less digits than its factorization.

649320886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 649320886 is about 25481.7755660786. The cubic root of 649320886 is about 865.9373206755.

The spelling of 649320886 in words is "six hundred forty-nine million, three hundred twenty thousand, eight hundred eighty-six".