864497236 has 12 divisors (see below), whose sum is σ = 1517705812. Its totient is φ = 430867008.

The previous prime is 864497233. The next prime is 864497269. The reversal of 864497236 is 632794468.

864497236 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 2 ways, for example, as 2722500 + 861774736 = 1650^2 + 29356^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 864497236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864497233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343995 + ... + 346498.

Almost surely, 2^864497236 is an apocalyptic number.

It is an amenable number.

864497236 is a deficient number, since it is larger than the sum of its proper divisors (653208576).

864497236 is a wasteful number, since it uses less digits than its factorization.

864497236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690810 (or 690808 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 864497236 is about 29402.3338529444. Note that the first 3 decimals coincide. The cubic root of 864497236 is about 952.6233074726.

The spelling of 864497236 in words is "eight hundred sixty-four million, four hundred ninety-seven thousand, two hundred thirty-six".