397715 has 8 divisors (see below), whose sum is σ = 505440. Its totient is φ = 299392.

The previous prime is 397697. The next prime is 397721. The reversal of 397715 is 517793.

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

It is a cyclic number.

It is not a de Polignac number, because 397715 - 2⁸ = 397459 is a prime.

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, 2255 + ... + 2424.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2³⁹⁷⁷¹⁵ is an apocalyptic number.

397715 is a deficient number, since it is larger than the sum of its proper divisors (107725).

397715 is a wasteful number, since it uses less digits than its factorization.

397715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701.

The product of its digits is 6615, while the sum is 32.

The square root of 397715 is about 630.6464936872. The cubic root of 397715 is about 73.5400617672.

The spelling of 397715 in words is "three hundred ninety-seven thousand, seven hundred fifteen".