2872570661 has 2 divisors, whose sum is σ = 2872570662. Its totient is φ = 2872570660.

The previous prime is 2872570643. The next prime is 2872570711. The reversal of 2872570661 is 1660752782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2869744900 + 2825761 = 53570^2 + 1681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2872570661 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2872570621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1436285330 + 1436285331.

It is an arithmetic number, because the mean of its divisors is an integer number (1436285331).

Almost surely, 2^2872570661 is an apocalyptic number.

It is an amenable number.

2872570661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872570661 is an equidigital number, since it uses as much as digits as its factorization.

2872570661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2872570661 is about 53596.3679832878. The cubic root of 2872570661 is about 1421.5328717342.

The spelling of 2872570661 in words is "two billion, eight hundred seventy-two million, five hundred seventy thousand, six hundred sixty-one".