426569 has 16 divisors (see below), whose sum is σ = 530880. Its totient is φ = 336960.

The previous prime is 426563. The next prime is 426583. The reversal of 426569 is 965624.

It is not a de Polignac number, because 426569 - 2⁴ = 426553 is a prime.

It is a super-2 number, since 2×426569² = 363922223522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2639 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (33180).

2⁴²⁶⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

426569 is a deficient number, since it is larger than the sum of its proper divisors (104311).

426569 is a wasteful number, since it uses less digits than its factorization.

426569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its digits is 12960, while the sum is 32.

The square root of 426569 is about 653.1224999952. The cubic root of 426569 is about 75.2771376314.

It can be divided in two parts, 4265 and 69, that added together give a palindrome (4334).

The spelling of 426569 in words is "four hundred twenty-six thousand, five hundred sixty-nine".