650997856 has 24 divisors (see below), whose sum is σ = 1302666624. Its totient is φ = 320161920.

The previous prime is 650997839. The next prime is 650997863. The reversal of 650997856 is 658799056.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 650997797 and 650997806.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 164800 + ... + 168703.

It is an arithmetic number, because the mean of its divisors is an integer number (54277776).

Almost surely, 2^650997856 is an apocalyptic number.

It is an amenable number.

650997856 is an abundant number, since it is smaller than the sum of its proper divisors (651668768).

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

650997856 is a wasteful number, since it uses less digits than its factorization.

650997856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333574 (or 333566 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 55.

The square root of 650997856 is about 25514.6596293190. The cubic root of 650997856 is about 866.6821514656.

The spelling of 650997856 in words is "six hundred fifty million, nine hundred ninety-seven thousand, eight hundred fifty-six".