650909056 has 128 divisors (see below), whose sum is σ = 1585128960. Its totient is φ = 259891200.

The previous prime is 650909029. The next prime is 650909093.

650909056 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×650909056² = 847365198365622272, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2299891 + ... + 2300173.

It is an arithmetic number, because the mean of its divisors is an integer number (12383820).

Almost surely, 2^650909056 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 650909056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792564480).

650909056 is an abundant number, since it is smaller than the sum of its proper divisors (934219904).

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

650909056 is a wasteful number, since it uses less digits than its factorization.

650909056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 650909056 is about 25512.9193939071. The cubic root of 650909056 is about 866.6427427979.

The spelling of 650909056 in words is "six hundred fifty million, nine hundred nine thousand, fifty-six".