3665799 has 6 divisors (see below), whose sum is σ = 5295056. Its totient is φ = 2443860.

The previous prime is 3665797. The next prime is 3665807. The reversal of 3665799 is 9975663.

It is not a de Polignac number, because 3665799 - 2¹ = 3665797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203647 + ... + 203664.

Almost surely, 2^3665799 is an apocalyptic number.

3665799 is a deficient number, since it is larger than the sum of its proper divisors (1629257).

3665799 is a wasteful number, since it uses less digits than its factorization.

3665799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407317 (or 407314 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 3665799 is about 1914.6276400387. The cubic root of 3665799 is about 154.1900027332.

The spelling of 3665799 in words is "three million, six hundred sixty-five thousand, seven hundred ninety-nine".