3724656613 has 4 divisors (see below), whose sum is σ = 3731806188. Its totient is φ = 3717507040.

The previous prime is 3724656587. The next prime is 3724656629. The reversal of 3724656613 is 3166564273.

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 1119370849 + 2605285764 = 33457^2 + 51042^2 .

It is a cyclic number.

It is not a de Polignac number, because 3724656613 - 2⁵ = 3724656581 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 3724656613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3724656643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3574006 + ... + 3575047.

It is an arithmetic number, because the mean of its divisors is an integer number (932951547).

Almost surely, 2^3724656613 is an apocalyptic number.

It is an amenable number.

3724656613 is a deficient number, since it is larger than the sum of its proper divisors (7149575).

3724656613 is an equidigital number, since it uses as much as digits as its factorization.

3724656613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7149574.

The product of its digits is 544320, while the sum is 43.

The square root of 3724656613 is about 61029.9648779188. The cubic root of 3724656613 is about 1550.1084368119.

The spelling of 3724656613 in words is "three billion, seven hundred twenty-four million, six hundred fifty-six thousand, six hundred thirteen".