3665699 has 4 divisors (see below), whose sum is σ = 3678936. Its totient is φ = 3652464.

The previous prime is 3665677. The next prime is 3665731. The reversal of 3665699 is 9965663.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3665699 - 2⁸ = 3665443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3665609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6194 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (919734).

Almost surely, 2^3665699 is an apocalyptic number.

3665699 is a deficient number, since it is larger than the sum of its proper divisors (13237).

3665699 is a wasteful number, since it uses less digits than its factorization.

3665699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13236.

The product of its digits is 262440, while the sum is 44.

The square root of 3665699 is about 1914.6015251221. The cubic root of 3665699 is about 154.1886006614.

The spelling of 3665699 in words is "three million, six hundred sixty-five thousand, six hundred ninety-nine".