651366980 has 24 divisors (see below), whose sum is σ = 1492223040. Its totient is φ = 236860640.

The previous prime is 651366943. The next prime is 651366997. The reversal of 651366980 is 89663156.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480160 + ... + 1480599.

It is an arithmetic number, because the mean of its divisors is an integer number (62175960).

Almost surely, 2^651366980 is an apocalyptic number.

It is an amenable number.

651366980 is an abundant number, since it is smaller than the sum of its proper divisors (840856060).

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

651366980 is a wasteful number, since it uses less digits than its factorization.

651366980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960779 (or 2960777 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 651366980 is about 25521.8921712321. The cubic root of 651366980 is about 866.8459270877.

The spelling of 651366980 in words is "six hundred fifty-one million, three hundred sixty-six thousand, nine hundred eighty".