3657906 has 32 divisors (see below), whose sum is σ = 9290880. Its totient is φ = 1045008.

The previous prime is 3657887. The next prime is 3657911. The reversal of 3657906 is 6097563.

It is a happy number.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4461 + ... + 5216.

It is an arithmetic number, because the mean of its divisors is an integer number (290340).

Almost surely, 2^3657906 is an apocalyptic number.

3657906 is an abundant number, since it is smaller than the sum of its proper divisors (5632974).

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

3657906 is a wasteful number, since it uses less digits than its factorization.

3657906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695 (or 9689 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 3657906 is about 1912.5652930031. The cubic root of 3657906 is about 154.0792586896.

The spelling of 3657906 in words is "three million, six hundred fifty-seven thousand, nine hundred six".