864724645 has 8 divisors (see below), whose sum is σ = 1062978840. Its totient is φ = 674906880.

The previous prime is 864724621. The next prime is 864724661. The reversal of 864724645 is 546427468.

It is a happy number.

864724645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 31651876 + 833072769 = 5626^2 + 28863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 864724645 - 2⁵ = 864724613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 864724595 and 864724604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108880 + ... + 2109289.

It is an arithmetic number, because the mean of its divisors is an integer number (132872355).

Almost surely, 2^864724645 is an apocalyptic number.

It is an amenable number.

864724645 is a deficient number, since it is larger than the sum of its proper divisors (198254195).

864724645 is a wasteful number, since it uses less digits than its factorization.

864724645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218215.

The product of its digits is 1290240, while the sum is 46.

The square root of 864724645 is about 29406.2007916698. The cubic root of 864724645 is about 952.7068304391.

The spelling of 864724645 in words is "eight hundred sixty-four million, seven hundred twenty-four thousand, six hundred forty-five".