397556683 has 2 divisors, whose sum is σ = 397556684. Its totient is φ = 397556682.

The previous prime is 397556659. The next prime is 397556699. The reversal of 397556683 is 386655793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397556683 - 2⁵ = 397556651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397556683.

It is not a weakly prime, because it can be changed into another prime (397556603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198778341 + 198778342.

It is an arithmetic number, because the mean of its divisors is an integer number (198778342).

Almost surely, 2^397556683 is an apocalyptic number.

397556683 is a deficient number, since it is larger than the sum of its proper divisors (1).

397556683 is an equidigital number, since it uses as much as digits as its factorization.

397556683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 52.

The square root of 397556683 is about 19938.8235109296. The cubic root of 397556683 is about 735.3030252824.

The spelling of 397556683 in words is "three hundred ninety-seven million, five hundred fifty-six thousand, six hundred eighty-three".