8724663965 has 4 divisors (see below), whose sum is σ = 10469596764. Its totient is φ = 6979731168.

The previous prime is 8724663919. The next prime is 8724663971. The reversal of 8724663965 is 5693664278.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3838793764 + 4885870201 = 61958^2 + 69899^2 .

It is a cyclic number.

It is not a de Polignac number, because 8724663965 - 2²² = 8720469661 is a prime.

It is a super-2 number, since 2×8724663965² (a number of 21 digits) contains 22 as substring.

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 8724663965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872466392 + ... + 872466401.

It is an arithmetic number, because the mean of its divisors is an integer number (2617399191).

Almost surely, 2^8724663965 is an apocalyptic number.

It is an amenable number.

8724663965 is a deficient number, since it is larger than the sum of its proper divisors (1744932799).

8724663965 is a wasteful number, since it uses less digits than its factorization.

8724663965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744932798.

The product of its digits is 13063680, while the sum is 56.

The square root of 8724663965 is about 93405.9096899120. The cubic root of 8724663965 is about 2058.6518313804.

The spelling of 8724663965 in words is "eight billion, seven hundred twenty-four million, six hundred sixty-three thousand, nine hundred sixty-five".