863612913 has 16 divisors (see below), whose sum is σ = 1174348800. Its totient is φ = 564365520.

The previous prime is 863612891. The next prime is 863612969. The reversal of 863612913 is 319216368.

It is not a de Polignac number, because 863612913 - 2⁹ = 863612401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (863612983) 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, 56748 + ... + 70338.

It is an arithmetic number, because the mean of its divisors is an integer number (73396800).

Almost surely, 2^863612913 is an apocalyptic number.

It is an amenable number.

863612913 is a deficient number, since it is larger than the sum of its proper divisors (310735887).

863612913 is a wasteful number, since it uses less digits than its factorization.

863612913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14012.

The product of its digits is 46656, while the sum is 39.

The square root of 863612913 is about 29387.2916921584. The cubic root of 863612913 is about 952.2983732881.

The spelling of 863612913 in words is "eight hundred sixty-three million, six hundred twelve thousand, nine hundred thirteen".