650666656 has 48 divisors (see below), whose sum is σ = 1305630144. Its totient is φ = 319140864.

The previous prime is 650666641. The next prime is 650666663. The reversal of 650666656 is 656666056.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371575 + ... + 373321.

It is an arithmetic number, because the mean of its divisors is an integer number (27200628).

Almost surely, 2^650666656 is an apocalyptic number.

It is an amenable number.

650666656 is an abundant number, since it is smaller than the sum of its proper divisors (654963488).

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

650666656 is a wasteful number, since it uses less digits than its factorization.

650666656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The square root of 650666656 is about 25508.1684171953. The cubic root of 650666656 is about 866.5351495370.

The spelling of 650666656 in words is "six hundred fifty million, six hundred sixty-six thousand, six hundred fifty-six".