3665493 has 30 divisors (see below), whose sum is σ = 5998454. Its totient is φ = 2217456.

The previous prime is 3665491. The next prime is 3665507. The reversal of 3665493 is 3945663.

It can be written as a sum of positive squares in only one way, i.e., 2537649 + 1127844 = 1593^2 + 1062^2 .

It is not a de Polignac number, because 3665493 - 2¹ = 3665491 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 (3665491) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 62098 + ... + 62156.

Almost surely, 2^3665493 is an apocalyptic number.

It is an amenable number.

3665493 is a deficient number, since it is larger than the sum of its proper divisors (2332961).

3665493 is an equidigital number, since it uses as much as digits as its factorization.

3665493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 75 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 3665493 is about 1914.5477272714. The cubic root of 3665493 is about 154.1857123130.

The spelling of 3665493 in words is "three million, six hundred sixty-five thousand, four hundred ninety-three".