8743636685 has 72 divisors (see below), whose sum is σ = 12779564616. Its totient is φ = 5721891840.

The previous prime is 8743636669. The next prime is 8743636687. The reversal of 8743636685 is 5866363478.

It can be written as a sum of positive squares in 12 ways, for example, as 2071524196 + 6672112489 = 45514^2 + 81683^2 .

It is not a de Polignac number, because 8743636685 - 2⁴ = 8743636669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8743636685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8743636687) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48307295 + ... + 48307475.

It is an arithmetic number, because the mean of its divisors is an integer number (177493953).

Almost surely, 2^8743636685 is an apocalyptic number.

It is an amenable number.

8743636685 is a deficient number, since it is larger than the sum of its proper divisors (4035927931).

8743636685 is a wasteful number, since it uses less digits than its factorization.

8743636685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 303 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 56.

The square root of 8743636685 is about 93507.4151337743. The cubic root of 8743636685 is about 2060.1430042585.

The spelling of 8743636685 in words is "eight billion, seven hundred forty-three million, six hundred thirty-six thousand, six hundred eighty-five".