2660001517 has 2 divisors, whose sum is σ = 2660001518. Its totient is φ = 2660001516.

The previous prime is 2660001511. The next prime is 2660001527. The reversal of 2660001517 is 7151000662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2485919881 + 174081636 = 49859^2 + 13194^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660001517 - 2¹⁵ = 2659968749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660001511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330000758 + 1330000759.

It is an arithmetic number, because the mean of its divisors is an integer number (1330000759).

Almost surely, 2^2660001517 is an apocalyptic number.

It is an amenable number.

2660001517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660001517 is an equidigital number, since it uses as much as digits as its factorization.

2660001517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2660001517 is about 51575.2025395926. The cubic root of 2660001517 is about 1385.5662456322.

The spelling of 2660001517 in words is "two billion, six hundred sixty million, one thousand, five hundred seventeen".