651480960 has 256 divisors, whose sum is σ = 2292111360. Its totient is φ = 156377088.

The previous prime is 651480943. The next prime is 651480971. The reversal of 651480960 is 69084156.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1072977 + ... + 1073583.

It is an arithmetic number, because the mean of its divisors is an integer number (8953560).

Almost surely, 2^651480960 is an apocalyptic number.

651480960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651480960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146055680).

651480960 is an abundant number, since it is smaller than the sum of its proper divisors (1640630400).

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

651480960 is a wasteful number, since it uses less digits than its factorization.

651480960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 651480960 is about 25524.1250584618. The cubic root of 651480960 is about 866.8964860605.

The spelling of 651480960 in words is "six hundred fifty-one million, four hundred eighty thousand, nine hundred sixty".