649453076 has 12 divisors (see below), whose sum is σ = 1138236372. Its totient is φ = 324242688.

The previous prime is 649453033. The next prime is 649453087. The reversal of 649453076 is 670354946.

It can be written as a sum of positive squares in 2 ways, for example, as 371564176 + 277888900 = 19276^2 + 16670^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117935 + ... + 123318.

It is an arithmetic number, because the mean of its divisors is an integer number (94853031).

Almost surely, 2^649453076 is an apocalyptic number.

It is an amenable number.

649453076 is a deficient number, since it is larger than the sum of its proper divisors (488783296).

649453076 is a wasteful number, since it uses less digits than its factorization.

649453076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241930 (or 241928 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 649453076 is about 25484.3692486198. The cubic root of 649453076 is about 865.9960797523.

The spelling of 649453076 in words is "six hundred forty-nine million, four hundred fifty-three thousand, seventy-six".