651862864 has 10 divisors (see below), whose sum is σ = 1262984330. Its totient is φ = 325931424.

The previous prime is 651862859. The next prime is 651862867. The reversal of 651862864 is 468268156.

It can be written as a sum of positive squares in only one way, i.e., 526243600 + 125619264 = 22940^2 + 11208^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651862867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20370699 + ... + 20370730.

It is an arithmetic number, because the mean of its divisors is an integer number (126298433).

Almost surely, 2^651862864 is an apocalyptic number.

It is an amenable number.

651862864 is a deficient number, since it is larger than the sum of its proper divisors (611121466).

651862864 is a wasteful number, since it uses less digits than its factorization.

651862864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40741437 (or 40741431 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 651862864 is about 25531.6051982636. The cubic root of 651862864 is about 867.0658471443.

The spelling of 651862864 in words is "six hundred fifty-one million, eight hundred sixty-two thousand, eight hundred sixty-four".