683890423 has 2 divisors, whose sum is σ = 683890424. Its totient is φ = 683890422.

The previous prime is 683890381. The next prime is 683890469. The reversal of 683890423 is 324098386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683890423 is a prime.

It is a super-2 number, since 2×683890423² = 935412221342237858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 683890423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683890483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341945211 + 341945212.

It is an arithmetic number, because the mean of its divisors is an integer number (341945212).

Almost surely, 2^683890423 is an apocalyptic number.

683890423 is a deficient number, since it is larger than the sum of its proper divisors (1).

683890423 is an equidigital number, since it uses as much as digits as its factorization.

683890423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 683890423 is about 26151.2986866809. The cubic root of 683890423 is about 881.0397588567.

The spelling of 683890423 in words is "six hundred eighty-three million, eight hundred ninety thousand, four hundred twenty-three".