2660579787 has 8 divisors (see below), whose sum is σ = 3562283520. Its totient is φ = 1766297960.

The previous prime is 2660579777. The next prime is 2660579837. The reversal of 2660579787 is 7879750662.

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

It is a cyclic number.

It is not a de Polignac number, because 2660579787 - 2⁷ = 2660579659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660579707) 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, 1854639 + ... + 1856072.

It is an arithmetic number, because the mean of its divisors is an integer number (445285440).

Almost surely, 2^2660579787 is an apocalyptic number.

2660579787 is a deficient number, since it is larger than the sum of its proper divisors (901703733).

2660579787 is a wasteful number, since it uses less digits than its factorization.

2660579787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710953.

The product of its (nonzero) digits is 8890560, while the sum is 57.

The square root of 2660579787 is about 51580.8083205372. The cubic root of 2660579787 is about 1385.6666432365. Note that the first 4 decimals are identical.

The spelling of 2660579787 in words is "two billion, six hundred sixty million, five hundred seventy-nine thousand, seven hundred eighty-seven".