649400676 has 24 divisors (see below), whose sum is σ = 1581150144. Its totient is φ = 207055200.

The previous prime is 649400671. The next prime is 649400743. The reversal of 649400676 is 676004946.

It is not an unprimeable number, because it can be changed into a prime (649400671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176175 + ... + 1176726.

It is an arithmetic number, because the mean of its divisors is an integer number (65881256).

Almost surely, 2^649400676 is an apocalyptic number.

It is an amenable number.

649400676 is an abundant number, since it is smaller than the sum of its proper divisors (931749468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649400676 is a wasteful number, since it uses less digits than its factorization.

649400676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352931 (or 2352929 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 649400676 is about 25483.3411467178. The cubic root of 649400676 is about 865.9727886597.

The spelling of 649400676 in words is "six hundred forty-nine million, four hundred thousand, six hundred seventy-six".