813970897 has 16 divisors (see below), whose sum is σ = 902385792. Its totient is φ = 730287360.

The previous prime is 813970879. The next prime is 813970921. The reversal of 813970897 is 798079318.

It is not a de Polignac number, because 813970897 - 2¹⁵ = 813938129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813970837) 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, 116647 + ... + 123427.

It is an arithmetic number, because the mean of its divisors is an integer number (56399112).

Almost surely, 2^813970897 is an apocalyptic number.

It is an amenable number.

813970897 is a deficient number, since it is larger than the sum of its proper divisors (88414895).

813970897 is a wasteful number, since it uses less digits than its factorization.

813970897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7128.

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 813970897 is about 28530.1752010043. The cubic root of 813970897 is about 933.6905409781.

The spelling of 813970897 in words is "eight hundred thirteen million, nine hundred seventy thousand, eight hundred ninety-seven".