8223654681 has 40 divisors (see below), whose sum is σ = 14189861664. Its totient is φ = 4690846080.

The previous prime is 8223654661. The next prime is 8223654697. The reversal of 8223654681 is 1864563228.

8223654681 is a `hidden beast` number, since 8 + 2 + 23 + 6 + 546 + 81 = 666.

It is not a de Polignac number, because 8223654681 - 2⁶ = 8223654617 is a prime.

It is a super-2 number, since 2×8223654681² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8223654661) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 256315 + ... + 286608.

Almost surely, 2^8223654681 is an apocalyptic number.

8223654681 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8223654681 is a deficient number, since it is larger than the sum of its proper divisors (5966206983).

8223654681 is a wasteful number, since it uses less digits than its factorization.

8223654681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542963 (or 542954 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 8223654681 is about 90684.3684490332. The cubic root of 8223654681 is about 2018.4668529500.

The spelling of 8223654681 in words is "eight billion, two hundred twenty-three million, six hundred fifty-four thousand, six hundred eighty-one".