2566729 has 8 divisors (see below), whose sum is σ = 2947680. Its totient is φ = 2210400.

The previous prime is 2566709. The next prime is 2566747. The reversal of 2566729 is 9276652.

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 2566729 - 2⁷ = 2566601 is a prime.

It is a d-powerful number, because it can be written as 2⁸ + 5⁶ + 6⁶ + 6⁸ + 7⁷ + 2¹⁰ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566709) 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, 5932 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (368460).

2^2566729 is an apocalyptic number.

It is an amenable number.

2566729 is a deficient number, since it is larger than the sum of its proper divisors (380951).

2566729 is a wasteful number, since it uses less digits than its factorization.

2566729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12311.

The product of its digits is 45360, while the sum is 37.

The square root of 2566729 is about 1602.1014324942. The cubic root of 2566729 is about 136.9178294970.

The spelling of 2566729 in words is "two million, five hundred sixty-six thousand, seven hundred twenty-nine".