2566830 has 64 divisors (see below), whose sum is σ = 7464960. Its totient is φ = 551424.

The previous prime is 2566829. The next prime is 2566859. The reversal of 2566830 is 386652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3211 + ... + 3929.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^2566830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3732480).

2566830 is an abundant number, since it is smaller than the sum of its proper divisors (4898130).

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

2566830 is a wasteful number, since it uses less digits than its factorization.

2566830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2566830 is about 1602.1329532845. The cubic root of 2566830 is about 136.9196253650.

The spelling of 2566830 in words is "two million, five hundred sixty-six thousand, eight hundred thirty".