652655920 has 80 divisors (see below), whose sum is σ = 1737888768. Its totient is φ = 223292160.

The previous prime is 652655903. The next prime is 652655923. The reversal of 652655920 is 29556256.

It is a happy number.

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

It is a super-2 number, since 2×652655920² = 851919499822092800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (652655923) 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, 352437 + ... + 354283.

Almost surely, 2^652655920 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 652655920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868944384).

652655920 is an abundant number, since it is smaller than the sum of its proper divisors (1085232848).

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

652655920 is a wasteful number, since it uses less digits than its factorization.

652655920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2492 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 652655920 is about 25547.1313458087. The cubic root of 652655920 is about 867.4173285889.

The spelling of 652655920 in words is "six hundred fifty-two million, six hundred fifty-five thousand, nine hundred twenty".