681223233 has 16 divisors (see below), whose sum is σ = 938393600. Its totient is φ = 439125840.

The previous prime is 681223229. The next prime is 681223259. The reversal of 681223233 is 332322186.

It is not a de Polignac number, because 681223233 - 2² = 681223229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 681223233.

It is not an unprimeable number, because it can be changed into a prime (681223033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144528 + ... + 149166.

It is an arithmetic number, because the mean of its divisors is an integer number (58649600).

Almost surely, 2^681223233 is an apocalyptic number.

It is an amenable number.

681223233 is a deficient number, since it is larger than the sum of its proper divisors (257170367).

681223233 is a wasteful number, since it uses less digits than its factorization.

681223233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252.

The product of its digits is 10368, while the sum is 30.

The square root of 681223233 is about 26100.2535045160. The cubic root of 681223233 is about 879.8929075084.

The spelling of 681223233 in words is "six hundred eighty-one million, two hundred twenty-three thousand, two hundred thirty-three".