320557364 has 6 divisors (see below), whose sum is σ = 560975394. Its totient is φ = 160278680.

The previous prime is 320557357. The next prime is 320557397. The reversal of 320557364 is 463755023.

It can be written as a sum of positive squares in only one way, i.e., 178756900 + 141800464 = 13370^2 + 11908^2 .

It is a super-2 number, since 2×320557364² = 205514047229256992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40069667 + ... + 40069674.

It is an arithmetic number, because the mean of its divisors is an integer number (93495899).

Almost surely, 2^320557364 is an apocalyptic number.

It is an amenable number.

320557364 is a deficient number, since it is larger than the sum of its proper divisors (240418030).

320557364 is a wasteful number, since it uses less digits than its factorization.

320557364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80139345 (or 80139343 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 320557364 is about 17904.1158396610. The cubic root of 320557364 is about 684.3872645968.

The spelling of 320557364 in words is "three hundred twenty million, five hundred fifty-seven thousand, three hundred sixty-four".