397578 has 32 divisors (see below), whose sum is σ = 861696. Its totient is φ = 121968.

The previous prime is 397567. The next prime is 397589. The reversal of 397578 is 875793.

It is an interprime number because it is at equal distance from previous prime (397567) and next prime (397589).

It is a super-3 number, since 3×397578³ = 188533395279433656, which contains 333 as substring.

It is a nialpdrome in base 9.

It is an unprimeable number.

397578 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5901 + ... + 5967.

It is an arithmetic number, because the mean of its divisors is an integer number (26928).

2³⁹⁷⁵⁷⁸ is an apocalyptic number.

397578 is an abundant number, since it is smaller than the sum of its proper divisors (464118).

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

397578 is a wasteful number, since it uses less digits than its factorization.

397578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138.

The product of its digits is 52920, while the sum is 39.

The square root of 397578 is about 630.5378656354. The cubic root of 397578 is about 73.5316167370.

The spelling of 397578 in words is "three hundred ninety-seven thousand, five hundred seventy-eight".