397650 has 48 divisors (see below), whose sum is σ = 1080288. Its totient is φ = 96000.

The previous prime is 397643. The next prime is 397673. The reversal of 397650 is 56793.

397650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

397650 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 23 ways as a sum of consecutive naturals, for example, 1530 + ... + 1770.

It is an arithmetic number, because the mean of its divisors is an integer number (22506).

2³⁹⁷⁶⁵⁰ is an apocalyptic number.

397650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 397650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540144).

397650 is an abundant number, since it is smaller than the sum of its proper divisors (682638).

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

397650 is a wasteful number, since it uses less digits than its factorization.

397650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 262 counting only the distinct ones).

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

The square root of 397650 is about 630.5949571635. The cubic root of 397650 is about 73.5360552429.

The spelling of 397650 in words is "three hundred ninety-seven thousand, six hundred fifty".