864722453 has 6 divisors (see below), whose sum is σ = 1005901686. Its totient is φ = 741190632.

The previous prime is 864722429. The next prime is 864722473. The reversal of 864722453 is 354227468.

864722453 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 only one way, i.e., 762974884 + 101747569 = 27622^2 + 10087^2 .

It is not a de Polignac number, because 864722453 - 2¹² = 864718357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 864722453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864722423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8823650 + ... + 8823747.

It is an arithmetic number, because the mean of its divisors is an integer number (167650281).

Almost surely, 2^864722453 is an apocalyptic number.

It is an amenable number.

864722453 is a deficient number, since it is larger than the sum of its proper divisors (141179233).

864722453 is a wasteful number, since it uses less digits than its factorization.

864722453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17647411 (or 17647404 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 864722453 is about 29406.1635205955. The cubic root of 864722453 is about 952.7060254294.

The spelling of 864722453 in words is "eight hundred sixty-four million, seven hundred twenty-two thousand, four hundred fifty-three".