3256665633 has 24 divisors (see below), whose sum is σ = 5104619520. Its totient is φ = 1988794080.

The previous prime is 3256665623. The next prime is 3256665637. The reversal of 3256665633 is 3365666523.

It is not a de Polignac number, because 3256665633 - 2⁹ = 3256665121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3256665637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90913 + ... + 121566.

It is an arithmetic number, because the mean of its divisors is an integer number (212692480).

Almost surely, 2^3256665633 is an apocalyptic number.

It is an amenable number.

3256665633 is a deficient number, since it is larger than the sum of its proper divisors (1847953887).

3256665633 is a wasteful number, since it uses less digits than its factorization.

3256665633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212629 (or 212626 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 45.

The square root of 3256665633 is about 57067.2027788291. The cubic root of 3256665633 is about 1482.2600048113.

The spelling of 3256665633 in words is "three billion, two hundred fifty-six million, six hundred sixty-five thousand, six hundred thirty-three".