650079920 has 80 divisors (see below), whose sum is σ = 1783123968. Its totient is φ = 215688960.

The previous prime is 650079919. The next prime is 650079923. The reversal of 650079920 is 29970056.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (650079923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1364 + ... + 36083.

Almost surely, 2^650079920 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 650079920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891561984).

650079920 is an abundant number, since it is smaller than the sum of its proper divisors (1133044048).

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

650079920 is a wasteful number, since it uses less digits than its factorization.

650079920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37498 (or 37492 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 650079920 is about 25496.6648799407. The cubic root of 650079920 is about 866.2746063625.

The spelling of 650079920 in words is "six hundred fifty million, seventy-nine thousand, nine hundred twenty".