397634 has 4 divisors (see below), whose sum is σ = 596454. Its totient is φ = 198816.

The previous prime is 397633. The next prime is 397643. The reversal of 397634 is 436793.

397634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 235225 + 162409 = 485^2 + 403^2 .

It is a super-2 number, since 2×397634² = 316225595912, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3² + 9 + 6⁷ + 7⁶ + 3³ + 4 .

It is a self number, because there is not a number n which added to its sum of digits gives 397634.

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 as a sum of consecutive naturals, namely, 99407 + ... + 99410.

2³⁹⁷⁶³⁴ is an apocalyptic number.

397634 is a deficient number, since it is larger than the sum of its proper divisors (198820).

397634 is a wasteful number, since it uses less digits than its factorization.

397634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198819.

The product of its digits is 13608, while the sum is 32.

The square root of 397634 is about 630.5822706039. The cubic root of 397634 is about 73.5350689545.

The spelling of 397634 in words is "three hundred ninety-seven thousand, six hundred thirty-four".