6687535892893 has 4 divisors (see below), whose sum is σ = 6693459309340. Its totient is φ = 6681612476448.

The previous prime is 6687535892861. The next prime is 6687535892899. The reversal of 6687535892893 is 3982985357866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 281559706884 + 6405976186009 = 530622^2 + 2531003^2 .

It is a cyclic number.

It is not a de Polignac number, because 6687535892893 - 2⁵ = 6687535892861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687535892899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2961706530 + ... + 2961708787.

It is an arithmetic number, because the mean of its divisors is an integer number (1673364827335).

Almost surely, 2^{6687535892893} is an apocalyptic number.

It is an amenable number.

6687535892893 is a deficient number, since it is larger than the sum of its proper divisors (5923416447).

6687535892893 is a wasteful number, since it uses less digits than its factorization.

6687535892893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5923416446.

The product of its digits is 4702924800, while the sum is 79.

The spelling of 6687535892893 in words is "six trillion, six hundred eighty-seven billion, five hundred thirty-five million, eight hundred ninety-two thousand, eight hundred ninety-three".