652878756 has 18 divisors (see below), whose sum is σ = 1650332502. Its totient is φ = 217626240.

The previous prime is 652878749. The next prime is 652878763. The reversal of 652878756 is 657878256.

It is an interprime number because it is at equal distance from previous prime (652878749) and next prime (652878763).

It can be written as a sum of positive squares in only one way, i.e., 623001600 + 29877156 = 24960^2 + 5466^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×652878756² = 852501340072215072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9067725 + ... + 9067796.

It is an arithmetic number, because the mean of its divisors is an integer number (91685139).

Almost surely, 2^652878756 is an apocalyptic number.

It is an amenable number.

652878756 is an abundant number, since it is smaller than the sum of its proper divisors (997453746).

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

652878756 is a wasteful number, since it uses less digits than its factorization.

652878756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18135531 (or 18135526 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 652878756 is about 25551.4922460509. The cubic root of 652878756 is about 867.5160379841.

The spelling of 652878756 in words is "six hundred fifty-two million, eight hundred seventy-eight thousand, seven hundred fifty-six".