681052003 has 2 divisors, whose sum is σ = 681052004. Its totient is φ = 681052002.

The previous prime is 681051971. The next prime is 681052013. The reversal of 681052003 is 300250186.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681052003 - 2⁵ = 681051971 is a prime.

It is not a weakly prime, because it can be changed into another prime (681052013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340526001 + 340526002.

It is an arithmetic number, because the mean of its divisors is an integer number (340526002).

Almost surely, 2^681052003 is an apocalyptic number.

681052003 is a deficient number, since it is larger than the sum of its proper divisors (1).

681052003 is an equidigital number, since it uses as much as digits as its factorization.

681052003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 681052003 is about 26096.9730620239. The cubic root of 681052003 is about 879.8191790151.

The spelling of 681052003 in words is "six hundred eighty-one million, fifty-two thousand, three".