3965506 has 16 divisors (see below), whose sum is σ = 6103224. Its totient is φ = 1931904.

The previous prime is 3965483. The next prime is 3965537. The reversal of 3965506 is 6055693.

It can be written as a sum of positive squares in 4 ways, for example, as 3767481 + 198025 = 1941^2 + 445^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22836 + ... + 23008.

Almost surely, 2^3965506 is an apocalyptic number.

3965506 is a deficient number, since it is larger than the sum of its proper divisors (2137718).

3965506 is a wasteful number, since it uses less digits than its factorization.

3965506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 24300, while the sum is 34.

The square root of 3965506 is about 1991.3578282167. The cubic root of 3965506 is about 158.2824888144.

The spelling of 3965506 in words is "three million, nine hundred sixty-five thousand, five hundred six".