2567897 has 4 divisors (see below), whose sum is σ = 2572980. Its totient is φ = 2562816.

The previous prime is 2567891. The next prime is 2567923. The reversal of 2567897 is 7987652.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 2446096 = 349^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2567897 - 2¹⁶ = 2502361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2567891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (643245).

2^2567897 is an apocalyptic number.

It is an amenable number.

2567897 is a deficient number, since it is larger than the sum of its proper divisors (5083).

2567897 is an equidigital number, since it uses as much as digits as its factorization.

2567897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5082.

The product of its digits is 211680, while the sum is 44.

The square root of 2567897 is about 1602.4659122740. The cubic root of 2567897 is about 136.9385946776.

The spelling of 2567897 in words is "two million, five hundred sixty-seven thousand, eight hundred ninety-seven".