6687342437866 has 32 divisors (see below), whose sum is σ = 10154405543040. Its totient is φ = 3302702424000.

The previous prime is 6687342437857. The next prime is 6687342437891.

6687342437866 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×6687342437866³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6687342437795 and 6687342437804.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367811296 + ... + 367829476.

It is an arithmetic number, because the mean of its divisors is an integer number (317325173220).

Almost surely, 2^{6687342437866} is an apocalyptic number.

6687342437866 is a deficient number, since it is larger than the sum of its proper divisors (3467063105174).

6687342437866 is a wasteful number, since it uses less digits than its factorization.

6687342437866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22510.

The product of its digits is 1170505728, while the sum is 70.

The spelling of 6687342437866 in words is "six trillion, six hundred eighty-seven billion, three hundred forty-two million, four hundred thirty-seven thousand, eight hundred sixty-six".