651987332 has 24 divisors (see below), whose sum is σ = 1208936736. Its totient is φ = 306603648.

The previous prime is 651987317. The next prime is 651987353. The reversal of 651987332 is 233789156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139343 + ... + 143945.

It is an arithmetic number, because the mean of its divisors is an integer number (50372364).

Almost surely, 2^651987332 is an apocalyptic number.

It is an amenable number.

651987332 is a deficient number, since it is larger than the sum of its proper divisors (556949404).

651987332 is a wasteful number, since it uses less digits than its factorization.

651987332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707 (or 6705 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 651987332 is about 25534.0426098180. The cubic root of 651987332 is about 867.1210300617.

The spelling of 651987332 in words is "six hundred fifty-one million, nine hundred eighty-seven thousand, three hundred thirty-two".