650669056 has 44 divisors (see below), whose sum is σ = 1345615920. Its totient is φ = 314101760.

The previous prime is 650669039. The next prime is 650669059. The reversal of 650669056 is 650966056.

It is a super-2 number, since 2×650669056² = 846740440871862272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (650669059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18741 + ... + 40651.

It is an arithmetic number, because the mean of its divisors is an integer number (30582180).

Almost surely, 2^650669056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650669056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672807960).

650669056 is an abundant number, since it is smaller than the sum of its proper divisors (694946864).

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

650669056 is a wasteful number, since it uses less digits than its factorization.

650669056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21960 (or 21942 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 650669056 is about 25508.2154609059. The cubic root of 650669056 is about 866.5362149477.

The spelling of 650669056 in words is "six hundred fifty million, six hundred sixty-nine thousand, fifty-six".