397605 has 16 divisors (see below), whose sum is σ = 685440. Its totient is φ = 195648.

The previous prime is 397597. The next prime is 397633. The reversal of 397605 is 506793.

It is not a de Polignac number, because 397605 - 2³ = 397597 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825 + ... + 1214.

It is an arithmetic number, because the mean of its divisors is an integer number (42840).

2³⁹⁷⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

397605 is a deficient number, since it is larger than the sum of its proper divisors (287835).

397605 is a wasteful number, since it uses less digits than its factorization.

397605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 397605 is about 630.5592755642. The cubic root of 397605 is about 73.5332812395.

The spelling of 397605 in words is "three hundred ninety-seven thousand, six hundred five".