397623 has 4 divisors (see below), whose sum is σ = 530168. Its totient is φ = 265080.

The previous prime is 397597. The next prime is 397633. The reversal of 397623 is 326793.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 397623 - 2⁵ = 397591 is a prime.

It is a super-3 number, since 3×397623³ = 188597420173330101, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397633) 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, 66268 + ... + 66273.

It is an arithmetic number, because the mean of its divisors is an integer number (132542).

2³⁹⁷⁶²³ is an apocalyptic number.

397623 is a deficient number, since it is larger than the sum of its proper divisors (132545).

397623 is a wasteful number, since it uses less digits than its factorization.

397623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132544.

The product of its digits is 6804, while the sum is 30.

The square root of 397623 is about 630.5735484462. The cubic root of 397623 is about 73.5343908660.

The spelling of 397623 in words is "three hundred ninety-seven thousand, six hundred twenty-three".