6687957119 has 4 divisors (see below), whose sum is σ = 6918576360. Its totient is φ = 6457337880.

The previous prime is 6687957103. The next prime is 6687957139. The reversal of 6687957119 is 9117597866.

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

It is a cyclic number.

It is not a de Polignac number, because 6687957119 - 2⁴ = 6687957103 is a prime.

It is a super-2 number, since 2×6687957119² = 89457540851165560322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687957139) 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, 115309577 + ... + 115309634.

It is an arithmetic number, because the mean of its divisors is an integer number (1729644090).

Almost surely, 2^6687957119 is an apocalyptic number.

6687957119 is a deficient number, since it is larger than the sum of its proper divisors (230619241).

6687957119 is a wasteful number, since it uses less digits than its factorization.

6687957119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230619240.

The product of its digits is 5715360, while the sum is 59.

The square root of 6687957119 is about 81779.9310283397. The cubic root of 6687957119 is about 1884.0734370298.

The spelling of 6687957119 in words is "six billion, six hundred eighty-seven million, nine hundred fifty-seven thousand, one hundred nineteen".