3694623665 has 8 divisors (see below), whose sum is σ = 4460097600. Its totient is φ = 2937999472.

The previous prime is 3694623649. The next prime is 3694623677. The reversal of 3694623665 is 5663264963.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3694623665 - 2⁴ = 3694623649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211515 + ... + 2213184.

It is an arithmetic number, because the mean of its divisors is an integer number (557512200).

Almost surely, 2^3694623665 is an apocalyptic number.

It is an amenable number.

3694623665 is a deficient number, since it is larger than the sum of its proper divisors (765473935).

3694623665 is a wasteful number, since it uses less digits than its factorization.

3694623665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424871.

The product of its digits is 4199040, while the sum is 50.

The square root of 3694623665 is about 60783.4160359551. The cubic root of 3694623665 is about 1545.9308690227.

The spelling of 3694623665 in words is "three billion, six hundred ninety-four million, six hundred twenty-three thousand, six hundred sixty-five".