397576613 has 4 divisors (see below), whose sum is σ = 454373280. Its totient is φ = 340779948.

The previous prime is 397576609. The next prime is 397576649. The reversal of 397576613 is 316675793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397576613 - 2² = 397576609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397576693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28398323 + ... + 28398336.

It is an arithmetic number, because the mean of its divisors is an integer number (113593320).

Almost surely, 2^397576613 is an apocalyptic number.

It is an amenable number.

397576613 is a deficient number, since it is larger than the sum of its proper divisors (56796667).

397576613 is an equidigital number, since it uses as much as digits as its factorization.

397576613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56796666.

The product of its digits is 714420, while the sum is 47.

The square root of 397576613 is about 19939.3232834016. The cubic root of 397576613 is about 735.3153122887.

The spelling of 397576613 in words is "three hundred ninety-seven million, five hundred seventy-six thousand, six hundred thirteen".