6697727985 has 32 divisors (see below), whose sum is σ = 11548414080. Its totient is φ = 3295139328.

The previous prime is 6697727969. The next prime is 6697727999. The reversal of 6697727985 is 5897277966.

It is not a de Polignac number, because 6697727985 - 2⁴ = 6697727969 is a prime.

It is a super-2 number, since 2×6697727985² = 89719120322104320450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303082 + ... + 324428.

It is an arithmetic number, because the mean of its divisors is an integer number (360887940).

Almost surely, 2^6697727985 is an apocalyptic number.

6697727985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6697727985 is a deficient number, since it is larger than the sum of its proper divisors (4850686095).

6697727985 is a wasteful number, since it uses less digits than its factorization.

6697727985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22977.

The product of its digits is 80015040, while the sum is 66.

The square root of 6697727985 is about 81839.6480014424. The cubic root of 6697727985 is about 1884.9905118581.

The spelling of 6697727985 in words is "six billion, six hundred ninety-seven million, seven hundred twenty-seven thousand, nine hundred eighty-five".