3970657 has 2 divisors, whose sum is σ = 3970658. Its totient is φ = 3970656.

The previous prime is 3970649. The next prime is 3970679. The reversal of 3970657 is 7560793.

3970657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3549456 + 421201 = 1884^2 + 649^2 .

It is a cyclic number.

It is not a de Polignac number, because 3970657 - 2³ = 3970649 is a prime.

It is a super-2 number, since 2×3970657² = 31532234023298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3970157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985328 + 1985329.

It is an arithmetic number, because the mean of its divisors is an integer number (1985329).

Almost surely, 2^3970657 is an apocalyptic number.

It is an amenable number.

3970657 is a deficient number, since it is larger than the sum of its proper divisors (1).

3970657 is an equidigital number, since it uses as much as digits as its factorization.

3970657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 3970657 is about 1992.6507471205. The cubic root of 3970657 is about 158.3509929210.

The spelling of 3970657 in words is "three million, nine hundred seventy thousand, six hundred fifty-seven".