397635 has 24 divisors (see below), whose sum is σ = 741456. Its totient is φ = 181440.

The previous prime is 397633. The next prime is 397643. The reversal of 397635 is 536793.

It is not a de Polignac number, because 397635 - 2¹ = 397633 is a prime.

It is a super-2 number, since 2×397635² = 316227186450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3² + 9 + 6⁷ + 7⁶ + 3³ + 5 .

It is a junction number, because it is equal to n+sod(n) for n = 397596 and 397605.

It is not an unprimeable number, because it can be changed into a prime (397633) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 465 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (30894).

2³⁹⁷⁶³⁵ is an apocalyptic number.

397635 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

397635 is a deficient number, since it is larger than the sum of its proper divisors (343821).

397635 is a wasteful number, since it uses less digits than its factorization.

397635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 556 counting only the distinct ones).

The product of its digits is 17010, while the sum is 33.

The square root of 397635 is about 630.5830635214. The cubic root of 397635 is about 73.5351305983.

The spelling of 397635 in words is "three hundred ninety-seven thousand, six hundred thirty-five".