864648045 has 24 divisors (see below), whose sum is σ = 1504315800. Its totient is φ = 459424896.

The previous prime is 864648019. The next prime is 864648047. The reversal of 864648045 is 540846468.

It can be written as a sum of positive squares in 4 ways, for example, as 58201641 + 806446404 = 7629^2 + 28398^2 .

It is not a de Polignac number, because 864648045 - 2⁵ = 864648013 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864648047) 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, 23610 + ... + 47819.

It is an arithmetic number, because the mean of its divisors is an integer number (62679825).

Almost surely, 2^864648045 is an apocalyptic number.

It is an amenable number.

864648045 is a deficient number, since it is larger than the sum of its proper divisors (639667755).

864648045 is a wasteful number, since it uses less digits than its factorization.

864648045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71709 (or 71706 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The square root of 864648045 is about 29404.8983164370. The cubic root of 864648045 is about 952.6786983631.

The spelling of 864648045 in words is "eight hundred sixty-four million, six hundred forty-eight thousand, forty-five".