681333003 has 48 divisors (see below), whose sum is σ = 1090908000. Its totient is φ = 407176704.

The previous prime is 681333001. The next prime is 681333007. The reversal of 681333003 is 300333186.

It is not a de Polignac number, because 681333003 - 2¹ = 681333001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681333001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613813 + ... + 614921.

It is an arithmetic number, because the mean of its divisors is an integer number (22727250).

Almost surely, 2^681333003 is an apocalyptic number.

681333003 is a deficient number, since it is larger than the sum of its proper divisors (409574997).

681333003 is a wasteful number, since it uses less digits than its factorization.

681333003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 681333003 is about 26102.3562729498. The cubic root of 681333003 is about 879.9401659559.

Adding to 681333003 its reverse (300333186), we get a palindrome (981666189).

The spelling of 681333003 in words is "six hundred eighty-one million, three hundred thirty-three thousand, three".