864769845 has 16 divisors (see below), whose sum is σ = 1384251840. Its totient is φ = 461003904.

The previous prime is 864769817. The next prime is 864769877. The reversal of 864769845 is 548967468.

It is not a de Polignac number, because 864769845 - 2⁵ = 864769813 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25321 + ... + 48689.

It is an arithmetic number, because the mean of its divisors is an integer number (86515740).

Almost surely, 2^864769845 is an apocalyptic number.

It is an amenable number.

864769845 is a deficient number, since it is larger than the sum of its proper divisors (519481995).

864769845 is a wasteful number, since it uses less digits than its factorization.

864769845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25844.

The product of its digits is 11612160, while the sum is 57.

The square root of 864769845 is about 29406.9693270150. The cubic root of 864769845 is about 952.7234297881.

The spelling of 864769845 in words is "eight hundred sixty-four million, seven hundred sixty-nine thousand, eight hundred forty-five".