3666535 has 4 divisors (see below), whose sum is σ = 4399848. Its totient is φ = 2933224.

The previous prime is 3666529. The next prime is 3666539. The reversal of 3666535 is 5356663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5356663 = 13 ⋅412051.

It is a cyclic number.

It is not a de Polignac number, because 3666535 - 2⁹ = 3666023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3666535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666539) 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, 366649 + ... + 366658.

It is an arithmetic number, because the mean of its divisors is an integer number (1099962).

Almost surely, 2^3666535 is an apocalyptic number.

3666535 is a deficient number, since it is larger than the sum of its proper divisors (733313).

3666535 is an equidigital number, since it uses as much as digits as its factorization.

3666535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733312.

The product of its digits is 48600, while the sum is 34.

The square root of 3666535 is about 1914.8198348670. The cubic root of 3666535 is about 154.2003211975.

The spelling of 3666535 in words is "three million, six hundred sixty-six thousand, five hundred thirty-five".