2071566 has 48 divisors (see below), whose sum is σ = 5267808. Its totient is φ = 576000.

The previous prime is 2071561. The next prime is 2071579. The reversal of 2071566 is 6651702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4966 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (109746).

2^2071566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2071566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633904).

2071566 is an abundant number, since it is smaller than the sum of its proper divisors (3196242).

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

2071566 is a wasteful number, since it uses less digits than its factorization.

2071566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2071566 is about 1439.2935767244. The cubic root of 2071566 is about 127.4773200720.

The spelling of 2071566 in words is "two million, seventy-one thousand, five hundred sixty-six".