397018 has 8 divisors (see below), whose sum is σ = 630612. Its totient is φ = 186816.

The previous prime is 397013. The next prime is 397027. The reversal of 397018 is 810793.

It can be written as a sum of positive squares in 2 ways, for example, as 351649 + 45369 = 593^2 + 213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (397013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5805 + ... + 5872.

2³⁹⁷⁰¹⁸ is an apocalyptic number.

397018 is a deficient number, since it is larger than the sum of its proper divisors (233594).

397018 is a wasteful number, since it uses less digits than its factorization.

397018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11696.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 397018 is about 630.0936438340. The cubic root of 397018 is about 73.4970767190.

The spelling of 397018 in words is "three hundred ninety-seven thousand, eighteen".