427569 has 8 divisors (see below), whose sum is σ = 573120. Its totient is φ = 283536.

The previous prime is 427541. The next prime is 427579. The reversal of 427569 is 965724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427569 - 2¹¹ = 425521 is a prime.

It is a super-2 number, since 2×427569² = 365630499522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (71640).

2⁴²⁷⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

427569 is a deficient number, since it is larger than the sum of its proper divisors (145551).

427569 is a wasteful number, since it uses less digits than its factorization.

427569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759.

The product of its digits is 15120, while the sum is 33.

The square root of 427569 is about 653.8876050209. The cubic root of 427569 is about 75.3359154535.

The spelling of 427569 in words is "four hundred twenty-seven thousand, five hundred sixty-nine".