863164257 has 8 divisors (see below), whose sum is σ = 1154364000. Its totient is φ = 573703680.

The previous prime is 863164249. The next prime is 863164261. The reversal of 863164257 is 752461368.

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

It is not a de Polignac number, because 863164257 - 2³ = 863164249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863164657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433632 + ... + 435617.

It is an arithmetic number, because the mean of its divisors is an integer number (144295500).

Almost surely, 2^863164257 is an apocalyptic number.

It is an amenable number.

863164257 is a deficient number, since it is larger than the sum of its proper divisors (291199743).

863164257 is a wasteful number, since it uses less digits than its factorization.

863164257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869583.

The product of its digits is 241920, while the sum is 42.

The square root of 863164257 is about 29379.6571967748. The cubic root of 863164257 is about 952.1334350456.

The spelling of 863164257 in words is "eight hundred sixty-three million, one hundred sixty-four thousand, two hundred fifty-seven".