6686297623 has 4 divisors (see below), whose sum is σ = 6916859640. Its totient is φ = 6455735608.

The previous prime is 6686297621. The next prime is 6686297647. The reversal of 6686297623 is 3267926866.

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 6686297623 - 2¹ = 6686297621 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 (6686297621) 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, 115280965 + ... + 115281022.

It is an arithmetic number, because the mean of its divisors is an integer number (1729214910).

Almost surely, 2^6686297623 is an apocalyptic number.

6686297623 is a deficient number, since it is larger than the sum of its proper divisors (230562017).

6686297623 is a wasteful number, since it uses less digits than its factorization.

6686297623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230562016.

The product of its digits is 7838208, while the sum is 55.

The square root of 6686297623 is about 81769.7842910204. The cubic root of 6686297623 is about 1883.9175911855.

The spelling of 6686297623 in words is "six billion, six hundred eighty-six million, two hundred ninety-seven thousand, six hundred twenty-three".