397006625 has 8 divisors (see below), whose sum is σ = 495464424. Its totient is φ = 317605200.

The previous prime is 397006613. The next prime is 397006651. The reversal of 397006625 is 526600793.

It can be written as a sum of positive squares in 4 ways, for example, as 10962721 + 386043904 = 3311^2 + 19648^2 .

It is not a de Polignac number, because 397006625 - 2²⁸ = 128571169 is a prime.

It is a super-2 number, since 2×397006625² = 315228520587781250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587902 + ... + 1588151.

It is an arithmetic number, because the mean of its divisors is an integer number (61933053).

Almost surely, 2^397006625 is an apocalyptic number.

It is an amenable number.

397006625 is a deficient number, since it is larger than the sum of its proper divisors (98457799).

397006625 is an equidigital number, since it uses as much as digits as its factorization.

397006625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176068 (or 3176058 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 397006625 is about 19925.0250940871. The cubic root of 397006625 is about 734.9637478842.

It can be divided in two parts, 3 and 97006625, that multiplied together give a triangular number (291019875 = T₂₄₁₂₅).

The spelling of 397006625 in words is "three hundred ninety-seven million, six thousand, six hundred twenty-five".