3925657 has 8 divisors (see below), whose sum is σ = 4235976. Its totient is φ = 3624192.

The previous prime is 3925637. The next prime is 3925667. The reversal of 3925657 is 7565293.

It can be written as a sum of positive squares in 4 ways, for example, as 2893401 + 1032256 = 1701^2 + 1016^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3925657 - 2¹¹ = 3923609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3925637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278 + ... + 3079.

It is an arithmetic number, because the mean of its divisors is an integer number (529497).

Almost surely, 2^3925657 is an apocalyptic number.

It is an amenable number.

3925657 is a deficient number, since it is larger than the sum of its proper divisors (310319).

3925657 is a wasteful number, since it uses less digits than its factorization.

3925657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427.

The product of its digits is 56700, while the sum is 37.

The square root of 3925657 is about 1981.3270805195. The cubic root of 3925657 is about 157.7505142375.

The spelling of 3925657 in words is "three million, nine hundred twenty-five thousand, six hundred fifty-seven".