6987997896 has 64 divisors (see below), whose sum is σ = 19573289280. Its totient is φ = 2060340480.

The previous prime is 6987997889. The next prime is 6987997903.

It is a happy number.

6987997896 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (6987997889) and next prime (6987997903).

It is a super-2 number, since 2×6987997896² = 97664229189000853632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347931 + ... + 367466.

It is an arithmetic number, because the mean of its divisors is an integer number (305832645).

Almost surely, 2^6987997896 is an apocalyptic number.

6987997896 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6987997896 is an abundant number, since it is smaller than the sum of its proper divisors (12585291384).

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

6987997896 is a wasteful number, since it uses less digits than its factorization.

6987997896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715454 (or 715450 counting only the distinct ones).

The product of its digits is 740710656, while the sum is 78.

The square root of 6987997896 is about 83594.2455914281. The cubic root of 6987997896 is about 1911.8372621364.

The spelling of 6987997896 in words is "six billion, nine hundred eighty-seven million, nine hundred ninety-seven thousand, eight hundred ninety-six".