2566387 has 8 divisors (see below), whose sum is σ = 2716560. Its totient is φ = 2417760.

The previous prime is 2566367. The next prime is 2566411. The reversal of 2566387 is 7836652.

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

It is a cyclic number.

It is not a de Polignac number, because 2566387 - 2⁷ = 2566259 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 5⁹ + 6 + 6⁶ + 3¹² + 8⁵ + 7³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2566307) 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, 5337 + ... + 5797.

It is an arithmetic number, because the mean of its divisors is an integer number (339570).

2^2566387 is an apocalyptic number.

2566387 is a deficient number, since it is larger than the sum of its proper divisors (150173).

2566387 is a wasteful number, since it uses less digits than its factorization.

2566387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773.

The product of its digits is 60480, while the sum is 37.

The square root of 2566387 is about 1601.9946941235. The cubic root of 2566387 is about 136.9117480891.

The spelling of 2566387 in words is "two million, five hundred sixty-six thousand, three hundred eighty-seven".