320655398 has 16 divisors (see below), whose sum is σ = 550674720. Its totient is φ = 137178816.

The previous prime is 320655389. The next prime is 320655403. The reversal of 320655398 is 893556023.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12161 + ... + 28092.

It is an arithmetic number, because the mean of its divisors is an integer number (34417170).

Almost surely, 2^320655398 is an apocalyptic number.

320655398 is a deficient number, since it is larger than the sum of its proper divisors (230019322).

320655398 is a wasteful number, since it uses less digits than its factorization.

320655398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40831.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 320655398 is about 17906.8533807590. The cubic root of 320655398 is about 684.4570247398.

The spelling of 320655398 in words is "three hundred twenty million, six hundred fifty-five thousand, three hundred ninety-eight".