653900652 has 18 divisors (see below), whose sum is σ = 1652915628. Its totient is φ = 217966872.

The previous prime is 653900633. The next prime is 653900657. The reversal of 653900652 is 256009356.

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18163907 = 653900652 / (6 + 5 + 3 + 9 + 0 + 0 + 6 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (653900657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9081918 + ... + 9081989.

It is an arithmetic number, because the mean of its divisors is an integer number (91828646).

Almost surely, 2^653900652 is an apocalyptic number.

It is an amenable number.

653900652 is an abundant number, since it is smaller than the sum of its proper divisors (999014976).

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

653900652 is a wasteful number, since it uses less digits than its factorization.

653900652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18163917 (or 18163912 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 653900652 is about 25571.4812242076. The cubic root of 653900652 is about 867.9684185810.

The spelling of 653900652 in words is "six hundred fifty-three million, nine hundred thousand, six hundred fifty-two".