6895807681 has 9 divisors (see below), whose sum is σ = 8022330081. Its totient is φ = 5910194052.

The previous prime is 6895807673. The next prime is 6895807727. The reversal of 6895807681 is 1867085986.

The square root of 6895807681 is 83041.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 6895807681 - 2³ = 6895807673 is a prime.

It is a super-2 number, since 2×6895807681² = 95104327146677195522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6895807081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 575356 + ... + 587218.

It is an arithmetic number, because the mean of its divisors is an integer number (891370009).

Almost surely, 2^6895807681 is an apocalyptic number.

6895807681 is the 83041-st square number.

6895807681 is the 41521-st centered octagonal number.

It is an amenable number.

6895807681 is a deficient number, since it is larger than the sum of its proper divisors (1126522400).

6895807681 is an frugal number, since it uses more digits than its factorization.

6895807681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23740 (or 11870 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 58.

The cubic root of 6895807681 is about 1903.3926164200.

The spelling of 6895807681 in words is "six billion, eight hundred ninety-five million, eight hundred seven thousand, six hundred eighty-one".