3272640857 has 2 divisors, whose sum is σ = 3272640858. Its totient is φ = 3272640856.

The previous prime is 3272640817. The next prime is 3272640887. The reversal of 3272640857 is 7580462723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1708912921 + 1563727936 = 41339^2 + 39544^2 .

It is an emirp because it is prime and its reverse (7580462723) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3272640857 - 2²⁸ = 3004205401 is a prime.

It is not a weakly prime, because it can be changed into another prime (3272640817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1636320428 + 1636320429.

It is an arithmetic number, because the mean of its divisors is an integer number (1636320429).

Almost surely, 2^3272640857 is an apocalyptic number.

It is an amenable number.

3272640857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3272640857 is an equidigital number, since it uses as much as digits as its factorization.

3272640857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 3272640857 is about 57207.0000699215. Note that the first 4 decimals coincide. The cubic root of 3272640857 is about 1484.6797416899.

The spelling of 3272640857 in words is "three billion, two hundred seventy-two million, six hundred forty thousand, eight hundred fifty-seven".