261763223 has 2 divisors, whose sum is σ = 261763224. Its totient is φ = 261763222.

The previous prime is 261763199. The next prime is 261763241. The reversal of 261763223 is 322367162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261763223 - 2⁸ = 261762967 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261763223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261763423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130881611 + 130881612.

It is an arithmetic number, because the mean of its divisors is an integer number (130881612).

Almost surely, 2^261763223 is an apocalyptic number.

261763223 is a deficient number, since it is larger than the sum of its proper divisors (1).

261763223 is an equidigital number, since it uses as much as digits as its factorization.

261763223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 261763223 is about 16179.0983370520. The cubic root of 261763223 is about 639.6899727257.

The spelling of 261763223 in words is "two hundred sixty-one million, seven hundred sixty-three thousand, two hundred twenty-three".