398720568 has 32 divisors (see below), whose sum is σ = 997376400. Its totient is φ = 132830208.

The previous prime is 398720561. The next prime is 398720591. The reversal of 398720568 is 865027893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398720561) 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, 50898 + ... + 58206.

Almost surely, 2^398720568 is an apocalyptic number.

It is an amenable number.

398720568 is an abundant number, since it is smaller than the sum of its proper divisors (598655832).

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

398720568 is a wasteful number, since it uses less digits than its factorization.

398720568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9591 (or 9587 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 398720568 is about 19967.9885817275. The cubic root of 398720568 is about 736.0198826938.

The spelling of 398720568 in words is "three hundred ninety-eight million, seven hundred twenty thousand, five hundred sixty-eight".