864414765 has 24 divisors (see below), whose sum is σ = 1499373720. Its totient is φ = 460696704.

The previous prime is 864414763. The next prime is 864414779. The reversal of 864414765 is 567414468.

It can be written as a sum of positive squares in 4 ways, for example, as 76265289 + 788149476 = 8733^2 + 28074^2 .

It is not a de Polignac number, because 864414765 - 2¹ = 864414763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 864414765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864414763) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66631 + ... + 78539.

It is an arithmetic number, because the mean of its divisors is an integer number (62473905).

Almost surely, 2^864414765 is an apocalyptic number.

It is an amenable number.

864414765 is a deficient number, since it is larger than the sum of its proper divisors (634958955).

864414765 is a wasteful number, since it uses less digits than its factorization.

864414765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13533 (or 13530 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 864414765 is about 29400.9313627987. The cubic root of 864414765 is about 952.5930138361.

It can be divided in two parts, 8644 and 14765, that added together give a square (23409 = 153²).

The spelling of 864414765 in words is "eight hundred sixty-four million, four hundred fourteen thousand, seven hundred sixty-five".