2806506 has 24 divisors (see below), whose sum is σ = 6346080. Its totient is φ = 894696.

The previous prime is 2806499. The next prime is 2806519. The reversal of 2806506 is 6056082.

2806506 is a `hidden beast` number, since 2 + 8 + 0 + 650 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2806506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2976 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (264420).

2^2806506 is an apocalyptic number.

2806506 is an abundant number, since it is smaller than the sum of its proper divisors (3539574).

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

2806506 is a wasteful number, since it uses less digits than its factorization.

2806506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6810 (or 6807 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2806506 is about 1675.2629644327. The cubic root of 2806506 is about 141.0550562118.

It can be divided in two parts, 280 and 6506, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 2806506 in words is "two million, eight hundred six thousand, five hundred six".