651616872 has 16 divisors (see below), whose sum is σ = 1629042240. Its totient is φ = 217205616.

The previous prime is 651616769. The next prime is 651616877. The reversal of 651616872 is 278616156.

651616872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (651616877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13575328 + ... + 13575375.

It is an arithmetic number, because the mean of its divisors is an integer number (101815140).

Almost surely, 2^651616872 is an apocalyptic number.

It is an amenable number.

651616872 is an abundant number, since it is smaller than the sum of its proper divisors (977425368).

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

651616872 is a wasteful number, since it uses less digits than its factorization.

651616872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27150712 (or 27150708 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 651616872 is about 25526.7873419277. The cubic root of 651616872 is about 866.9567658692.

The spelling of 651616872 in words is "six hundred fifty-one million, six hundred sixteen thousand, eight hundred seventy-two".