397707 has 8 divisors (see below), whose sum is σ = 542784. Its totient is φ = 258888.

The previous prime is 397697. The next prime is 397721. The reversal of 397707 is 707793.

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

It is not a de Polignac number, because 397707 - 2⁶ = 397643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (67848).

2³⁹⁷⁷⁰⁷ is an apocalyptic number.

397707 is a deficient number, since it is larger than the sum of its proper divisors (145077).

397707 is a wasteful number, since it uses less digits than its factorization.

397707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129.

The product of its (nonzero) digits is 9261, while the sum is 33.

The square root of 397707 is about 630.6401509577. The cubic root of 397707 is about 73.5395686801.

The spelling of 397707 in words is "three hundred ninety-seven thousand, seven hundred seven".