2660974289 has 4 divisors (see below), whose sum is σ = 2722857456. Its totient is φ = 2599091124.

The previous prime is 2660974279. The next prime is 2660974291. The reversal of 2660974289 is 9824790662.

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 2660974289 - 2⁸ = 2660974033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660974289.

It is not an unprimeable number, because it can be changed into a prime (2660974279) 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 in 3 ways as a sum of consecutive naturals, for example, 30941519 + ... + 30941604.

It is an arithmetic number, because the mean of its divisors is an integer number (680714364).

Almost surely, 2^2660974289 is an apocalyptic number.

It is an amenable number.

2660974289 is a deficient number, since it is larger than the sum of its proper divisors (61883167).

2660974289 is an equidigital number, since it uses as much as digits as its factorization.

2660974289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61883166.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 2660974289 is about 51584.6322948996. The cubic root of 2660974289 is about 1385.7351272124.

The spelling of 2660974289 in words is "two billion, six hundred sixty million, nine hundred seventy-four thousand, two hundred eighty-nine".