651800916 has 72 divisors (see below), whose sum is σ = 1831624704. Its totient is φ = 194080320.

The previous prime is 651800911. The next prime is 651800969. The reversal of 651800916 is 619008156.

651800916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651800911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7956 + ... + 36971.

It is an arithmetic number, because the mean of its divisors is an integer number (25439232).

Almost surely, 2^651800916 is an apocalyptic number.

It is an amenable number.

651800916 is an abundant number, since it is smaller than the sum of its proper divisors (1179823788).

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

651800916 is a wasteful number, since it uses less digits than its factorization.

651800916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44981 (or 44976 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 651800916 is about 25530.3920063911. The cubic root of 651800916 is about 867.0383798657.

The spelling of 651800916 in words is "six hundred fifty-one million, eight hundred thousand, nine hundred sixteen".