3965617 has 2 divisors, whose sum is σ = 3965618. Its totient is φ = 3965616.

The previous prime is 3965587. The next prime is 3965629. The reversal of 3965617 is 7165693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3381921 + 583696 = 1839^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 3965617 - 2¹¹ = 3963569 is a prime.

It is a super-2 number, since 2×3965617² = 31452236381378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3965317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982808 + 1982809.

It is an arithmetic number, because the mean of its divisors is an integer number (1982809).

Almost surely, 2^3965617 is an apocalyptic number.

It is an amenable number.

3965617 is a deficient number, since it is larger than the sum of its proper divisors (1).

3965617 is an equidigital number, since it uses as much as digits as its factorization.

3965617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 37.

The square root of 3965617 is about 1991.3856984522. The cubic root of 3965617 is about 158.2839656493.

It can be divided in two parts, 39 and 65617, that added together give a palindrome (65656).

The spelling of 3965617 in words is "three million, nine hundred sixty-five thousand, six hundred seventeen".