2065866 has 32 divisors (see below), whose sum is σ = 4563648. Its totient is φ = 618240.

The previous prime is 2065841. The next prime is 2065879. The reversal of 2065866 is 6685602.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7320 + ... + 7596.

It is an arithmetic number, because the mean of its divisors is an integer number (142614).

2^2065866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2065866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2281824).

2065866 is an abundant number, since it is smaller than the sum of its proper divisors (2497782).

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

2065866 is a wasteful number, since it uses less digits than its factorization.

2065866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

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

The square root of 2065866 is about 1437.3120746727. The cubic root of 2065866 is about 127.3602929554.

The spelling of 2065866 in words is "two million, sixty-five thousand, eight hundred sixty-six".