864717427 has 16 divisors (see below), whose sum is σ = 1047651840. Its totient is φ = 696739968.

The previous prime is 864717409. The next prime is 864717431. The reversal of 864717427 is 724717468.

864717427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864717427 - 2⁷ = 864717299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864717467) 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, 105408 + ... + 113314.

It is an arithmetic number, because the mean of its divisors is an integer number (65478240).

Almost surely, 2^864717427 is an apocalyptic number.

864717427 is a deficient number, since it is larger than the sum of its proper divisors (182934413).

864717427 is a wasteful number, since it uses less digits than its factorization.

864717427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8850.

The product of its digits is 526848, while the sum is 46.

The square root of 864717427 is about 29406.0780621966. The cubic root of 864717427 is about 952.7041796311.

The spelling of 864717427 in words is "eight hundred sixty-four million, seven hundred seventeen thousand, four hundred twenty-seven".