6997697880 has 64 divisors (see below), whose sum is σ = 21481320960. Its totient is φ = 1822654848.

The previous prime is 6997697849. The next prime is 6997697881. The reversal of 6997697880 is 887967996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6997697881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672912 + ... + 683231.

It is an arithmetic number, because the mean of its divisors is an integer number (335645640).

Almost surely, 2^6997697880 is an apocalyptic number.

6997697880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6997697880 is an abundant number, since it is smaller than the sum of its proper divisors (14483623080).

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

6997697880 is a wasteful number, since it uses less digits than its factorization.

6997697880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356200 (or 1356196 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 69.

The square root of 6997697880 is about 83652.2437236444. The cubic root of 6997697880 is about 1912.7214551539.

The spelling of 6997697880 in words is "six billion, nine hundred ninety-seven million, six hundred ninety-seven thousand, eight hundred eighty".