6689675724 has 96 divisors (see below), whose sum is σ = 16728391680. Its totient is φ = 2074621248.

The previous prime is 6689675711. The next prime is 6689675731. The reversal of 6689675724 is 4275769866.

It is a super-2 number, since 2×6689675724² = 89503522584549848352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2981347 + ... + 2983589.

It is an arithmetic number, because the mean of its divisors is an integer number (174254080).

Almost surely, 2^6689675724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6689675724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8364195840).

6689675724 is an abundant number, since it is smaller than the sum of its proper divisors (10038715956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6689675724 is a wasteful number, since it uses less digits than its factorization.

6689675724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499 (or 2497 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The square root of 6689675724 is about 81790.4378518663. The cubic root of 6689675724 is about 1884.2348067205.

The spelling of 6689675724 in words is "six billion, six hundred eighty-nine million, six hundred seventy-five thousand, seven hundred twenty-four".