397762680 has 64 divisors (see below), whose sum is σ = 1363760640. Its totient is φ = 90916992.

The previous prime is 397762679. The next prime is 397762693. The reversal of 397762680 is 86267793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235924 + ... + 237603.

It is an arithmetic number, because the mean of its divisors is an integer number (21308760).

Almost surely, 2^397762680 is an apocalyptic number.

397762680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397762680 is an abundant number, since it is smaller than the sum of its proper divisors (965997960).

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

397762680 is a wasteful number, since it uses less digits than its factorization.

397762680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473548 (or 473544 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 397762680 is about 19943.9885679871. The cubic root of 397762680 is about 735.4300042932.

The spelling of 397762680 in words is "three hundred ninety-seven million, seven hundred sixty-two thousand, six hundred eighty".