691423898003 has 2 divisors, whose sum is σ = 691423898004. Its totient is φ = 691423898002.

The previous prime is 691423897999. The next prime is 691423898029. The reversal of 691423898003 is 300898324196.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 691423898003 - 2² = 691423897999 is a prime.

It is not a weakly prime, because it can be changed into another prime (691423898093) 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 as a sum of consecutive naturals, namely, 345711949001 + 345711949002.

It is an arithmetic number, because the mean of its divisors is an integer number (345711949002).

Almost surely, 2^691423898003 is an apocalyptic number.

691423898003 is a deficient number, since it is larger than the sum of its proper divisors (1).

691423898003 is an equidigital number, since it uses as much as digits as its factorization.

691423898003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 691423898003 in words is "six hundred ninety-one billion, four hundred twenty-three million, eight hundred ninety-eight thousand, three".