690163223 has 2 divisors, whose sum is σ = 690163224. Its totient is φ = 690163222.

The previous prime is 690163193. The next prime is 690163237. The reversal of 690163223 is 322361096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690163223 - 2¹⁶ = 690097687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690163223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690163273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345081611 + 345081612.

It is an arithmetic number, because the mean of its divisors is an integer number (345081612).

Almost surely, 2^690163223 is an apocalyptic number.

690163223 is a deficient number, since it is larger than the sum of its proper divisors (1).

690163223 is an equidigital number, since it uses as much as digits as its factorization.

690163223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 690163223 is about 26270.9577861181. The cubic root of 690163223 is about 883.7252644844.

The spelling of 690163223 in words is "six hundred ninety million, one hundred sixty-three thousand, two hundred twenty-three".