3642669 has 12 divisors (see below), whose sum is σ = 5287776. Its totient is φ = 2416392.

The previous prime is 3642649. The next prime is 3642673. The reversal of 3642669 is 9662463.

3642669 is a `hidden beast` number, since 3 + 642 + 6 + 6 + 9 = 666.

It is not a de Polignac number, because 3642669 - 2⁹ = 3642157 is a prime.

It is a super-2 number, since 2×3642669² = 26538074887122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1152 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (440648).

Almost surely, 2^3642669 is an apocalyptic number.

It is an amenable number.

3642669 is a deficient number, since it is larger than the sum of its proper divisors (1645107).

3642669 is a wasteful number, since it uses less digits than its factorization.

3642669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016 (or 2013 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 3642669 is about 1908.5777427184. The cubic root of 3642669 is about 153.8650220000.

The spelling of 3642669 in words is "three million, six hundred forty-two thousand, six hundred sixty-nine".