3666672 has 30 divisors (see below), whose sum is σ = 10261992. Its totient is φ = 1222176.

The previous prime is 3666661. The next prime is 3666703. The reversal of 3666672 is 2766663.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12588 + ... + 12875.

Almost surely, 2^3666672 is an apocalyptic number.

It is an amenable number.

3666672 is an abundant number, since it is smaller than the sum of its proper divisors (6595320).

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

3666672 is a wasteful number, since it uses less digits than its factorization.

3666672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25477 (or 25468 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 3666672 is about 1914.8556081334. The cubic root of 3666672 is about 154.2022417374.

Subtracting from 3666672 its reverse (2766663), we obtain a palindrome (900009).

The spelling of 3666672 in words is "three million, six hundred sixty-six thousand, six hundred seventy-two".