3657668 has 12 divisors (see below), whose sum is σ = 7315392. Its totient is φ = 1567560.

The previous prime is 3657653. The next prime is 3657677. The reversal of 3657668 is 8667563.

3657668 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65288 + ... + 65343.

It is an arithmetic number, because the mean of its divisors is an integer number (609616).

Almost surely, 2^3657668 is an apocalyptic number.

It is an amenable number.

3657668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3657668 is a wasteful number, since it uses less digits than its factorization.

3657668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130642 (or 130640 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 3657668 is about 1912.5030718930. The cubic root of 3657668 is about 154.0759169180.

The spelling of 3657668 in words is "three million, six hundred fifty-seven thousand, six hundred sixty-eight".