426645223 has 4 divisors (see below), whose sum is σ = 427617520. Its totient is φ = 425672928.

The previous prime is 426645217. The next prime is 426645229. The reversal of 426645223 is 322546624.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (426645217) and next prime (426645229).

It is a cyclic number.

It is not a de Polignac number, because 426645223 - 2⁹ = 426644711 is a prime.

It is a super-2 number, since 2×426645223² = 364052292617439458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426645229) 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 in 3 ways as a sum of consecutive naturals, for example, 485490 + ... + 486367.

It is an arithmetic number, because the mean of its divisors is an integer number (106904380).

Almost surely, 2^426645223 is an apocalyptic number.

426645223 is a deficient number, since it is larger than the sum of its proper divisors (972297).

426645223 is an equidigital number, since it uses as much as digits as its factorization.

426645223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972296.

The product of its digits is 69120, while the sum is 34.

The square root of 426645223 is about 20655.3921047266. The cubic root of 426645223 is about 752.8162108542.

The spelling of 426645223 in words is "four hundred twenty-six million, six hundred forty-five thousand, two hundred twenty-three".