650989056 has 80 divisors (see below), whose sum is σ = 1809777024. Its totient is φ = 207550464.

The previous prime is 650989049. The next prime is 650989081.

650989056 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×650989056² = 847573502063542272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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

It is a junction number, because it is equal to n+sod(n) for n = 650988996 and 650989014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26115 + ... + 44541.

Almost surely, 2^650989056 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 650989056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904888512).

650989056 is an abundant number, since it is smaller than the sum of its proper divisors (1158787968).

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

650989056 is a wasteful number, since it uses less digits than its factorization.

650989056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18471 (or 18455 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 650989056 is about 25514.4871788559. The cubic root of 650989056 is about 866.6782462621.

The spelling of 650989056 in words is "six hundred fifty million, nine hundred eighty-nine thousand, fifty-six".