2905866 has 24 divisors (see below), whose sum is σ = 6570720. Its totient is φ = 926376.

The previous prime is 2905853. The next prime is 2905867. The reversal of 2905866 is 6685092.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2905866.

It is not an unprimeable number, because it can be changed into a prime (2905867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3096 + ... + 3923.

It is an arithmetic number, because the mean of its divisors is an integer number (273780).

2^2905866 is an apocalyptic number.

2905866 is an abundant number, since it is smaller than the sum of its proper divisors (3664854).

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

2905866 is a wasteful number, since it uses less digits than its factorization.

2905866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2905866 is about 1704.6600834184. The cubic root of 2905866 is about 142.7004013256.

The spelling of 2905866 in words is "two million, nine hundred five thousand, eight hundred sixty-six".