397698 has 32 divisors (see below), whose sum is σ = 964224. Its totient is φ = 106752.

The previous prime is 397697. The next prime is 397721. The reversal of 397698 is 896793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397698.

It is not an unprimeable number, because it can be changed into a prime (397697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (30132).

2³⁹⁷⁶⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482112).

397698 is an abundant number, since it is smaller than the sum of its proper divisors (566526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397698 is a wasteful number, since it uses less digits than its factorization.

397698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its digits is 81648, while the sum is 42.

The square root of 397698 is about 630.6330153108. The cubic root of 397698 is about 73.5390139491.

The spelling of 397698 in words is "three hundred ninety-seven thousand, six hundred ninety-eight".