3669642 has 12 divisors (see below), whose sum is σ = 7950930. Its totient is φ = 1223208.

The previous prime is 3669613. The next prime is 3669643. The reversal of 3669642 is 2469663.

3669642 is a `hidden beast` number, since 3 + 6 + 6 + 9 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 1535121 = 1461^2 + 1239^2 .

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 d-powerful number, because it can be written as 3¹¹ + 6 + 6⁵ + 9⁵ + 6⁷ + 4¹⁰ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 3669597 and 3669606.

It is not an unprimeable number, because it can be changed into a prime (3669643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101917 + ... + 101952.

Almost surely, 2^3669642 is an apocalyptic number.

3669642 is an abundant number, since it is smaller than the sum of its proper divisors (4281288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3669642 is a wasteful number, since it uses less digits than its factorization.

3669642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203877 (or 203874 counting only the distinct ones).

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

The square root of 3669642 is about 1915.6309665486. The cubic root of 3669642 is about 154.2438650459.

The spelling of 3669642 in words is "three million, six hundred sixty-nine thousand, six hundred forty-two".