651644152 has 16 divisors (see below), whose sum is σ = 1263965400. Its totient is φ = 314586720.

The previous prime is 651644141. The next prime is 651644167. The reversal of 651644152 is 251446156.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404174 + ... + 1404637.

Almost surely, 2^651644152 is an apocalyptic number.

It is an amenable number.

651644152 is a deficient number, since it is larger than the sum of its proper divisors (612321248).

651644152 is a wasteful number, since it uses less digits than its factorization.

651644152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808846 (or 2808842 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 651644152 is about 25527.3216769797. The cubic root of 651644152 is about 866.9688641085.

The spelling of 651644152 in words is "six hundred fifty-one million, six hundred forty-four thousand, one hundred fifty-two".