651473816 has 96 divisors (see below), whose sum is σ = 1459656000. Its totient is φ = 271724544.

The previous prime is 651473789. The next prime is 651473831. The reversal of 651473816 is 618374156.

651473816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3375416 + ... + 3375608.

It is an arithmetic number, because the mean of its divisors is an integer number (15204750).

Almost surely, 2^651473816 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 651473816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729828000).

651473816 is an abundant number, since it is smaller than the sum of its proper divisors (808182184).

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

651473816 is a wasteful number, since it uses less digits than its factorization.

651473816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 390 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 651473816 is about 25523.9851120471. The cubic root of 651473816 is about 866.8933173155.

The spelling of 651473816 in words is "six hundred fifty-one million, four hundred seventy-three thousand, eight hundred sixteen".