2566680 has 64 divisors (see below), whose sum is σ = 7832160. Its totient is φ = 672768.

The previous prime is 2566679. The next prime is 2566687. The reversal of 2566680 is 866652.

2566680 = T₃₁₅ + T₃₁₆ + ... + T₃₅₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566687) 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, 8614 + ... + 8906.

2^2566680 is an apocalyptic number.

2566680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3916080).

2566680 is an abundant number, since it is smaller than the sum of its proper divisors (5265480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566680 is a wasteful number, since it uses less digits than its factorization.

2566680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2566680 is about 1602.0861400062. The cubic root of 2566680 is about 136.9169582173.

The spelling of 2566680 in words is "two million, five hundred sixty-six thousand, six hundred eighty".