2506866 has 8 divisors (see below), whose sum is σ = 5013744. Its totient is φ = 835620.

The previous prime is 2506859. The next prime is 2506873. The reversal of 2506866 is 6686052.

It is an interprime number because it is at equal distance from previous prime (2506859) and next prime (2506873).

It is a sphenic number, since it is the product of 3 distinct primes.

2506866 is an admirable number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208900 + ... + 208911.

It is an arithmetic number, because the mean of its divisors is an integer number (626718).

2^2506866 is an apocalyptic number.

2506866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2506866 is a wasteful number, since it uses less digits than its factorization.

2506866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417816.

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

The square root of 2506866 is about 1583.3085612097. The cubic root of 2506866 is about 135.8450152005.

The spelling of 2506866 in words is "two million, five hundred six thousand, eight hundred sixty-six".