397062681 has 4 divisors (see below), whose sum is σ = 529416912. Its totient is φ = 264708452.

The previous prime is 397062671. The next prime is 397062691. The reversal of 397062681 is 186260793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (397062671) and next prime (397062691).

It is a cyclic number.

It is not a de Polignac number, because 397062681 - 2¹⁰ = 397061657 is a prime.

It is a super-2 number, since 2×397062681² = 315317545285815522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397062671) 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, 66177111 + ... + 66177116.

It is an arithmetic number, because the mean of its divisors is an integer number (132354228).

Almost surely, 2^397062681 is an apocalyptic number.

It is an amenable number.

397062681 is a deficient number, since it is larger than the sum of its proper divisors (132354231).

397062681 is a wasteful number, since it uses less digits than its factorization.

397062681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132354230.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 397062681 is about 19926.4317176960. The cubic root of 397062681 is about 734.9983377259.

The spelling of 397062681 in words is "three hundred ninety-seven million, sixty-two thousand, six hundred eighty-one".