6697865997 has 32 divisors (see below), whose sum is σ = 10588156800. Its totient is φ = 4172259456.

The previous prime is 6697865981. The next prime is 6697866001. The reversal of 6697865997 is 7995687966.

It is not a de Polignac number, because 6697865997 - 2⁴ = 6697865981 is a prime.

It is a super-2 number, since 2×6697865997² = 89722817827537608018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697865917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51978 + ... + 126875.

It is an arithmetic number, because the mean of its divisors is an integer number (330879900).

Almost surely, 2^6697865997 is an apocalyptic number.

It is an amenable number.

6697865997 is a deficient number, since it is larger than the sum of its proper divisors (3890290803).

6697865997 is a wasteful number, since it uses less digits than its factorization.

6697865997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178954 (or 178948 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 72.

The square root of 6697865997 is about 81840.4911825436. The cubic root of 6697865997 is about 1885.0034590109.

The spelling of 6697865997 in words is "six billion, six hundred ninety-seven million, eight hundred sixty-five thousand, nine hundred ninety-seven".