6923737681 has 9 divisors (see below), whose sum is σ = 8054821449. Its totient is φ = 5934133044.

The previous prime is 6923737657. The next prime is 6923737697. The reversal of 6923737681 is 1867373296.

It is a happy number.

The square root of 6923737681 is 83209.

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

It is not a de Polignac number, because 6923737681 - 2⁷ = 6923737553 is a prime.

It is a super-3 number, since 3×6923737681³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6923737631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 576520 + ... + 588406.

It is an arithmetic number, because the mean of its divisors is an integer number (894980161).

Almost surely, 2^6923737681 is an apocalyptic number.

6923737681 is the 83209-th square number.

6923737681 is the 41605-th centered octagonal number.

It is an amenable number.

6923737681 is a deficient number, since it is larger than the sum of its proper divisors (1131083768).

6923737681 is an frugal number, since it uses more digits than its factorization.

6923737681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23788 (or 11894 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The cubic root of 6923737681 is about 1905.9589168856.

It can be divided in two parts, 692 and 3737681, that added together give a palindrome (3738373).

The spelling of 6923737681 in words is "six billion, nine hundred twenty-three million, seven hundred thirty-seven thousand, six hundred eighty-one".