6694985385 has 96 divisors (see below), whose sum is σ = 13293521280. Its totient is φ = 3086899200.

The previous prime is 6694985377. The next prime is 6694985413. The reversal of 6694985385 is 5835894966.

6694985385 is a `hidden beast` number, since 6 + 6 + 9 + 4 + 98 + 538 + 5 = 666.

It is not a de Polignac number, because 6694985385 - 2³ = 6694985377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 958305 + ... + 965265.

It is an arithmetic number, because the mean of its divisors is an integer number (138474180).

Almost surely, 2^6694985385 is an apocalyptic number.

It is an amenable number.

6694985385 is a deficient number, since it is larger than the sum of its proper divisors (6598535895).

6694985385 is a wasteful number, since it uses less digits than its factorization.

6694985385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079 (or 7076 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The square root of 6694985385 is about 81822.8903486060. The cubic root of 6694985385 is about 1884.7331867476.

The spelling of 6694985385 in words is "six billion, six hundred ninety-four million, nine hundred eighty-five thousand, three hundred eighty-five".