651884372 has 6 divisors (see below), whose sum is σ = 1140797658. Its totient is φ = 325942184.

The previous prime is 651884347. The next prime is 651884381. The reversal of 651884372 is 273488156.

It can be written as a sum of positive squares in only one way, i.e., 625300036 + 26584336 = 25006^2 + 5156^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81485543 + ... + 81485550.

It is an arithmetic number, because the mean of its divisors is an integer number (190132943).

Almost surely, 2^651884372 is an apocalyptic number.

It is an amenable number.

651884372 is a deficient number, since it is larger than the sum of its proper divisors (488913286).

651884372 is a wasteful number, since it uses less digits than its factorization.

651884372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162971097 (or 162971095 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 651884372 is about 25532.0263982317. The cubic root of 651884372 is about 867.0753832232.

It can be divided in two parts, 651884 and 372, that added together give a palindrome (652256).

The spelling of 651884372 in words is "six hundred fifty-one million, eight hundred eighty-four thousand, three hundred seventy-two".