651031632 has 30 divisors (see below), whose sum is σ = 1821984762. Its totient is φ = 217010496.

The previous prime is 651031621. The next prime is 651031649. The reversal of 651031632 is 236130156.

651031632 is a `hidden beast` number, since 651 + 0 + 3 + 1 + 6 + 3 + 2 = 666.

651031632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 649026576 + 2005056 = 25476^2 + 1416^2 .

It is a junction number, because it is equal to n+sod(n) for n = 651031596 and 651031605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2260383 + ... + 2260670.

Almost surely, 2^651031632 is an apocalyptic number.

It is an amenable number.

651031632 is an abundant number, since it is smaller than the sum of its proper divisors (1170953130).

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

651031632 is a wasteful number, since it uses less digits than its factorization.

651031632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521067 (or 4521058 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 651031632 is about 25515.3215147291. The cubic root of 651031632 is about 866.6971400199.

Adding to 651031632 its reverse (236130156), we get a palindrome (887161788).

The spelling of 651031632 in words is "six hundred fifty-one million, thirty-one thousand, six hundred thirty-two".