397581601 has 16 divisors (see below), whose sum is σ = 434833920. Its totient is φ = 362053120.

The previous prime is 397581497. The next prime is 397581623. The reversal of 397581601 is 106185793.

It is a cyclic number.

It is not a de Polignac number, because 397581601 - 2⁹ = 397581089 is a prime.

It is a super-2 number, since 2×397581601² = 316142258907446402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397581671) 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, 68316 + ... + 73906.

It is an arithmetic number, because the mean of its divisors is an integer number (27177120).

Almost surely, 2^397581601 is an apocalyptic number.

It is an amenable number.

397581601 is a deficient number, since it is larger than the sum of its proper divisors (37252319).

397581601 is a wasteful number, since it uses less digits than its factorization.

397581601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 397581601 is about 19939.4483624798. The cubic root of 397581601 is about 735.3183873668.

The spelling of 397581601 in words is "three hundred ninety-seven million, five hundred eighty-one thousand, six hundred one".