651223632 has 40 divisors (see below), whose sum is σ = 1770873760. Its totient is φ = 205649280.

The previous prime is 651223621. The next prime is 651223637. The reversal of 651223632 is 236322156.

It is a self number, because there is not a number n which added to its sum of digits gives 651223632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651223637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356119 + ... + 357942.

It is an arithmetic number, because the mean of its divisors is an integer number (44271844).

Almost surely, 2^651223632 is an apocalyptic number.

It is an amenable number.

651223632 is an abundant number, since it is smaller than the sum of its proper divisors (1119650128).

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

651223632 is a wasteful number, since it uses less digits than its factorization.

651223632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714091 (or 714085 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 651223632 is about 25519.0836826090. The cubic root of 651223632 is about 866.7823327544.

Adding to 651223632 its reverse (236322156), we get a palindrome (887545788).

The spelling of 651223632 in words is "six hundred fifty-one million, two hundred twenty-three thousand, six hundred thirty-two".