397063680 has 320 divisors, whose sum is σ = 1414784448. Its totient is φ = 94371840.

The previous prime is 397063657. The next prime is 397063699. The reversal of 397063680 is 86360793.

It is a tau number, because it is divible by the number of its divisors (320).

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 in 31 ways as a sum of consecutive naturals, for example, 4093392 + ... + 4093488.

Almost surely, 2^397063680 is an apocalyptic number.

397063680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397063680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707392224).

397063680 is an abundant number, since it is smaller than the sum of its proper divisors (1017720768).

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

397063680 is a wasteful number, since it uses less digits than its factorization.

397063680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 397063680 is about 19926.4567848878. The cubic root of 397063680 is about 734.9989541380.

The spelling of 397063680 in words is "three hundred ninety-seven million, sixty-three thousand, six hundred eighty".