3664686615 has 16 divisors (see below), whose sum is σ = 5915390688. Its totient is φ = 1937202176.

The previous prime is 3664686611. The next prime is 3664686637. The reversal of 3664686615 is 5166864663.

It is a cyclic number.

It is not a de Polignac number, because 3664686615 - 2² = 3664686611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664686611) 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 15 ways as a sum of consecutive naturals, for example, 1079334 + ... + 1082723.

It is an arithmetic number, because the mean of its divisors is an integer number (369711918).

Almost surely, 2^3664686615 is an apocalyptic number.

3664686615 is a deficient number, since it is larger than the sum of its proper divisors (2250704073).

3664686615 is a wasteful number, since it uses less digits than its factorization.

3664686615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162178.

The product of its digits is 3732480, while the sum is 51.

The square root of 3664686615 is about 60536.6551355458. The cubic root of 3664686615 is about 1541.7440486051.

The spelling of 3664686615 in words is "three billion, six hundred sixty-four million, six hundred eighty-six thousand, six hundred fifteen".