320768560 has 40 divisors (see below), whose sum is σ = 852329376. Its totient is φ = 109977600.

The previous prime is 320768533. The next prime is 320768573. The reversal of 320768560 is 65867023.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 285841 + ... + 286960.

Almost surely, 2^320768560 is an apocalyptic number.

It is an amenable number.

320768560 is an abundant number, since it is smaller than the sum of its proper divisors (531560816).

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

320768560 is a wasteful number, since it uses less digits than its factorization.

320768560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572821 (or 572815 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 320768560 is about 17910.0128419831. The cubic root of 320768560 is about 684.5375321596.

The spelling of 320768560 in words is "three hundred twenty million, seven hundred sixty-eight thousand, five hundred sixty".