3265606561 has 4 divisors (see below), whose sum is σ = 3732121792. Its totient is φ = 2799091332.

The previous prime is 3265606543. The next prime is 3265606571. The reversal of 3265606561 is 1656065623.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3265606561 - 2⁵ = 3265606529 is a prime.

It is a super-2 number, since 2×3265606561² = 21328372422492493442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3265606511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233257605 + ... + 233257618.

It is an arithmetic number, because the mean of its divisors is an integer number (933030448).

Almost surely, 2^3265606561 is an apocalyptic number.

It is an amenable number.

3265606561 is a deficient number, since it is larger than the sum of its proper divisors (466515231).

3265606561 is an equidigital number, since it uses as much as digits as its factorization.

3265606561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466515230.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 3265606561 is about 57145.4859197120. The cubic root of 3265606561 is about 1483.6152427316.

The spelling of 3265606561 in words is "three billion, two hundred sixty-five million, six hundred six thousand, five hundred sixty-one".