2660013993 has 64 divisors (see below), whose sum is σ = 4527194112. Its totient is φ = 1351434240.

The previous prime is 2660013989. The next prime is 2660014001. The reversal of 2660013993 is 3993100662.

It is not a de Polignac number, because 2660013993 - 2² = 2660013989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2660013193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2174380 + ... + 2175602.

It is an arithmetic number, because the mean of its divisors is an integer number (70737408).

Almost surely, 2^2660013993 is an apocalyptic number.

It is an amenable number.

2660013993 is a deficient number, since it is larger than the sum of its proper divisors (1867180119).

2660013993 is a wasteful number, since it uses less digits than its factorization.

2660013993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 2660013993 is about 51575.3234890485. The cubic root of 2660013993 is about 1385.5684118337.

The spelling of 2660013993 in words is "two billion, six hundred sixty million, thirteen thousand, nine hundred ninety-three".