864610899 has 4 divisors (see below), whose sum is σ = 1152814536. Its totient is φ = 576407264.

The previous prime is 864610897. The next prime is 864610909. The reversal of 864610899 is 998016468.

It is a happy number.

864610899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 864610899 - 2¹ = 864610897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (864610891) 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, 144101814 + ... + 144101819.

It is an arithmetic number, because the mean of its divisors is an integer number (288203634).

Almost surely, 2^864610899 is an apocalyptic number.

864610899 is a deficient number, since it is larger than the sum of its proper divisors (288203637).

864610899 is a wasteful number, since it uses less digits than its factorization.

864610899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288203636.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 864610899 is about 29404.2666801946. The cubic root of 864610899 is about 952.6650555444.

The spelling of 864610899 in words is "eight hundred sixty-four million, six hundred ten thousand, eight hundred ninety-nine".