3665007 has 10 divisors (see below), whose sum is σ = 5475008. Its totient is φ = 2443284.

The previous prime is 3664963. The next prime is 3665017. The reversal of 3665007 is 7005663.

3665007 is a `hidden beast` number, since 3 + 6 + 650 + 0 + 7 = 666.

It is not a de Polignac number, because 3665007 - 2⁶ = 3664943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665017) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22543 + ... + 22704.

Almost surely, 2^3665007 is an apocalyptic number.

3665007 is a deficient number, since it is larger than the sum of its proper divisors (1810001).

3665007 is an equidigital number, since it uses as much as digits as its factorization.

3665007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45259 (or 45250 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 3665007 is about 1914.4208001377. The cubic root of 3665007 is about 154.1788976255.

The spelling of 3665007 in words is "three million, six hundred sixty-five thousand, seven".