2660587243 has 4 divisors (see below), whose sum is σ = 2674092960. Its totient is φ = 2647081528.

The previous prime is 2660587217. The next prime is 2660587247. The reversal of 2660587243 is 3427850662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3427850662 = 2 ⋅1713925331.

It is a cyclic number.

It is not a de Polignac number, because 2660587243 - 2²¹ = 2658490091 is a prime.

It is a super-2 number, since 2×2660587243² = 14157448955228682098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660587243.

It is not an unprimeable number, because it can be changed into a prime (2660587247) 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, 6752563 + ... + 6752956.

It is an arithmetic number, because the mean of its divisors is an integer number (668523240).

Almost surely, 2^2660587243 is an apocalyptic number.

2660587243 is a deficient number, since it is larger than the sum of its proper divisors (13505717).

2660587243 is a wasteful number, since it uses less digits than its factorization.

2660587243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13505716.

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 2660587243 is about 51580.8805954299. The cubic root of 2660587243 is about 1385.6679376311.

The spelling of 2660587243 in words is "two billion, six hundred sixty million, five hundred eighty-seven thousand, two hundred forty-three".