864967663 has 8 divisors (see below), whose sum is σ = 996319232. Its totient is φ = 735562296.

The previous prime is 864967657. The next prime is 864967781. The reversal of 864967663 is 366769468.

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

It is not a de Polignac number, because 864967663 - 2²¹ = 862870511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864967613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485595 + ... + 487372.

It is an arithmetic number, because the mean of its divisors is an integer number (124539904).

Almost surely, 2^864967663 is an apocalyptic number.

864967663 is a deficient number, since it is larger than the sum of its proper divisors (131351569).

864967663 is a wasteful number, since it uses less digits than its factorization.

864967663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973101.

The product of its digits is 7838208, while the sum is 55.

The square root of 864967663 is about 29410.3325890749. The cubic root of 864967663 is about 952.7960701080.

The spelling of 864967663 in words is "eight hundred sixty-four million, nine hundred sixty-seven thousand, six hundred sixty-three".