397682707 has 2 divisors, whose sum is σ = 397682708. Its totient is φ = 397682706.

The previous prime is 397682693. The next prime is 397682731. The reversal of 397682707 is 707286793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397682707 - 2²⁷ = 263464979 is a prime.

It is not a weakly prime, because it can be changed into another prime (397682767) by changing a digit.

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 as a sum of consecutive naturals, namely, 198841353 + 198841354.

It is an arithmetic number, because the mean of its divisors is an integer number (198841354).

Almost surely, 2^397682707 is an apocalyptic number.

397682707 is a deficient number, since it is larger than the sum of its proper divisors (1).

397682707 is an equidigital number, since it uses as much as digits as its factorization.

397682707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 397682707 is about 19941.9835272222. The cubic root of 397682707 is about 735.3807131884.

The spelling of 397682707 in words is "three hundred ninety-seven million, six hundred eighty-two thousand, seven hundred seven".