397615 has 8 divisors (see below), whose sum is σ = 480528. Its totient is φ = 315840.

The previous prime is 397597. The next prime is 397633. The reversal of 397615 is 516793.

It is an interprime number because it is at equal distance from previous prime (397597) and next prime (397633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-397615 is a prime.

It is a Duffinian number.

It is a congruent 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, 1264 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (60066).

2³⁹⁷⁶¹⁵ is an apocalyptic number.

397615 is a deficient number, since it is larger than the sum of its proper divisors (82913).

397615 is a wasteful number, since it uses less digits than its factorization.

397615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its digits is 5670, while the sum is 31.

The square root of 397615 is about 630.5672049829. The cubic root of 397615 is about 73.5338977028.

The spelling of 397615 in words is "three hundred ninety-seven thousand, six hundred fifteen".