651664322 has 16 divisors (see below), whose sum is σ = 1003924800. Its totient is φ = 317132400.

The previous prime is 651664303. The next prime is 651664327. The reversal of 651664322 is 223466156.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (651664327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15422 + ... + 39257.

It is an arithmetic number, because the mean of its divisors is an integer number (62745300).

Almost surely, 2^651664322 is an apocalyptic number.

651664322 is a deficient number, since it is larger than the sum of its proper divisors (352260478).

651664322 is a wasteful number, since it uses less digits than its factorization.

651664322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54841.

The product of its digits is 51840, while the sum is 35.

The square root of 651664322 is about 25527.7167408290. The cubic root of 651664322 is about 866.9778089605.

The spelling of 651664322 in words is "six hundred fifty-one million, six hundred sixty-four thousand, three hundred twenty-two".