3640786713 has 6 divisors (see below), whose sum is σ = 5258914154. Its totient is φ = 2427191136.

The previous prime is 3640786703. The next prime is 3640786727. The reversal of 3640786713 is 3176870463.

It can be written as a sum of positive squares in only one way, i.e., 2351474064 + 1289312649 = 48492^2 + 35907^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3640786713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640786703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202265920 + ... + 202265937.

Almost surely, 2^3640786713 is an apocalyptic number.

It is an amenable number.

3640786713 is a deficient number, since it is larger than the sum of its proper divisors (1618127441).

3640786713 is a wasteful number, since it uses less digits than its factorization.

3640786713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404531863 (or 404531860 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 3640786713 is about 60338.9319842504. The cubic root of 3640786713 is about 1538.3851505958.

The spelling of 3640786713 in words is "three billion, six hundred forty million, seven hundred eighty-six thousand, seven hundred thirteen".