3205644641 has 8 divisors (see below), whose sum is σ = 3375506400. Its totient is φ = 3035897280.

The previous prime is 3205644623. The next prime is 3205644649. The reversal of 3205644641 is 1464465023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3205644641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3205644649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32270 + ... + 86328.

It is an arithmetic number, because the mean of its divisors is an integer number (421938300).

Almost surely, 2^3205644641 is an apocalyptic number.

It is an amenable number.

3205644641 is a deficient number, since it is larger than the sum of its proper divisors (169861759).

3205644641 is a wasteful number, since it uses less digits than its factorization.

3205644641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57199.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 3205644641 is about 56618.4125616393. The cubic root of 3205644641 is about 1474.4785502926.

The spelling of 3205644641 in words is "three billion, two hundred five million, six hundred forty-four thousand, six hundred forty-one".