3970665 has 12 divisors (see below), whose sum is σ = 6882564. Its totient is φ = 2117664.

The previous prime is 3970657. The next prime is 3970679. The reversal of 3970665 is 5660793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 2442969 = 1236^2 + 1563^2 .

It is not a de Polignac number, because 3970665 - 2³ = 3970657 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44074 + ... + 44163.

It is an arithmetic number, because the mean of its divisors is an integer number (573547).

Almost surely, 2^3970665 is an apocalyptic number.

It is an amenable number.

3970665 is a deficient number, since it is larger than the sum of its proper divisors (2911899).

3970665 is a wasteful number, since it uses less digits than its factorization.

3970665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88248 (or 88245 counting only the distinct ones).

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

The square root of 3970665 is about 1992.6527544959. The cubic root of 3970665 is about 158.3510992684.

The spelling of 3970665 in words is "three million, nine hundred seventy thousand, six hundred sixty-five".