3665608 has 16 divisors (see below), whose sum is σ = 7277580. Its totient is φ = 1724928.

The previous prime is 3665587. The next prime is 3665609. The reversal of 3665608 is 8065663.

It can be written as a sum of positive squares in 2 ways, for example, as 3452164 + 213444 = 1858^2 + 462^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a d-powerful number, because it can be written as 3³ + 6² + 6² + 5⁹ + 6⁸ + 0 + 8⁵ .

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, 13341 + ... + 13612.

Almost surely, 2^3665608 is an apocalyptic number.

It is an amenable number.

3665608 is a deficient number, since it is larger than the sum of its proper divisors (3611972).

3665608 is a wasteful number, since it uses less digits than its factorization.

3665608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26976 (or 26972 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 3665608 is about 1914.5777602385. The cubic root of 3665608 is about 154.1873247538.

The spelling of 3665608 in words is "three million, six hundred sixty-five thousand, six hundred eight".