3906657 has 16 divisors (see below), whose sum is σ = 5820480. Its totient is φ = 2589696.

The previous prime is 3906653. The next prime is 3906659. The reversal of 3906657 is 7566093.

It is a happy number.

It is not a de Polignac number, because 3906657 - 2² = 3906653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3906653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6658 + ... + 7220.

It is an arithmetic number, because the mean of its divisors is an integer number (363780).

Almost surely, 2^3906657 is an apocalyptic number.

It is an amenable number.

3906657 is a deficient number, since it is larger than the sum of its proper divisors (1913823).

3906657 is a wasteful number, since it uses less digits than its factorization.

3906657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 823 counting only the distinct ones).

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

The square root of 3906657 is about 1976.5264986840. The cubic root of 3906657 is about 157.4956007842.

The spelling of 3906657 in words is "three million, nine hundred six thousand, six hundred fifty-seven".