6694839684 has 81 divisors (see below), whose sum is σ = 18342463503. Its totient is φ = 2057986944.

The previous prime is 6694839643. The next prime is 6694839713. The reversal of 6694839684 is 4869384966.

The square root of 6694839684 is 81822.

It is a perfect power (a square), and thus also a powerful number.

6694839684 is a `hidden beast` number, since 6 + 69 + 483 + 96 + 8 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 48024900 + 6646814784 = 6930^2 + 81528^2 .

It is a super-2 number, since 2×6694839684² = 89641756788922439712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6381592 + ... + 6382640.

Almost surely, 2^6694839684 is an apocalyptic number.

6694839684 is the 81822-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6694839684

6694839684 is an abundant number, since it is smaller than the sum of its proper divisors (11647623819).

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

6694839684 is a wasteful number, since it uses less digits than its factorization.

6694839684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 1067 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 63.

The cubic root of 6694839684 is about 1884.7195143502.

The spelling of 6694839684 in words is "six billion, six hundred ninety-four million, eight hundred thirty-nine thousand, six hundred eighty-four".