221713463 has 2 divisors, whose sum is σ = 221713464. Its totient is φ = 221713462.

The previous prime is 221713447. The next prime is 221713477. The reversal of 221713463 is 364317122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221713463 - 2⁴ = 221713447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221713403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110856731 + 110856732.

It is an arithmetic number, because the mean of its divisors is an integer number (110856732).

Almost surely, 2^221713463 is an apocalyptic number.

221713463 is a deficient number, since it is larger than the sum of its proper divisors (1).

221713463 is an equidigital number, since it uses as much as digits as its factorization.

221713463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 221713463 is about 14890.0457689021. The cubic root of 221713463 is about 605.2442726462.

The spelling of 221713463 in words is "two hundred twenty-one million, seven hundred thirteen thousand, four hundred sixty-three".