4026569 has 16 divisors (see below), whose sum is σ = 4490640. Its totient is φ = 3594240.

The previous prime is 4026527. The next prime is 4026571. The reversal of 4026569 is 9656204.

It can be written as a sum of positive squares in 8 ways, for example, as 26569 + 4000000 = 163^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 4026569 - 2⁸ = 4026313 is a prime.

It is a super-2 number, since 2×4026569² = 32426515823522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4026509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36887 + ... + 36995.

It is an arithmetic number, because the mean of its divisors is an integer number (280665).

Almost surely, 2^4026569 is an apocalyptic number.

It is an amenable number.

4026569 is a deficient number, since it is larger than the sum of its proper divisors (464071).

4026569 is a wasteful number, since it uses less digits than its factorization.

4026569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220.

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

The square root of 4026569 is about 2006.6312566089. The cubic root of 4026569 is about 159.0907937068.

The spelling of 4026569 in words is "four million, twenty-six thousand, five hundred sixty-nine".