683621903 has 2 divisors, whose sum is σ = 683621904. Its totient is φ = 683621902.

The previous prime is 683621831. The next prime is 683621921. The reversal of 683621903 is 309126386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 683621903 - 2¹⁰ = 683620879 is a prime.

It is a super-2 number, since 2×683621903² = 934677812522682818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673621903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341810951 + 341810952.

It is an arithmetic number, because the mean of its divisors is an integer number (341810952).

Almost surely, 2^683621903 is an apocalyptic number.

683621903 is a deficient number, since it is larger than the sum of its proper divisors (1).

683621903 is an equidigital number, since it uses as much as digits as its factorization.

683621903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 683621903 is about 26146.1642119834. The cubic root of 683621903 is about 880.9244344530.

The spelling of 683621903 in words is "six hundred eighty-three million, six hundred twenty-one thousand, nine hundred three".