6997189656 has 16 divisors (see below), whose sum is σ = 17492974200. Its totient is φ = 2332396544.

The previous prime is 6997189637. The next prime is 6997189673. The reversal of 6997189656 is 6569817996.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145774761 + ... + 145774808.

Almost surely, 2^6997189656 is an apocalyptic number.

It is an amenable number.

6997189656 is an abundant number, since it is smaller than the sum of its proper divisors (10495784544).

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

6997189656 is a wasteful number, since it uses less digits than its factorization.

6997189656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291549578 (or 291549574 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 66.

The square root of 6997189656 is about 83649.2059496084. The cubic root of 6997189656 is about 1912.6751487591.

The spelling of 6997189656 in words is "six billion, nine hundred ninety-seven million, one hundred eighty-nine thousand, six hundred fifty-six".