3256866 has 48 divisors (see below), whose sum is σ = 7581600. Its totient is φ = 1007424.

The previous prime is 3256861. The next prime is 3256871. The reversal of 3256866 is 6686523.

3256866 is a `hidden beast` number, since 32 + 568 + 66 = 666.

It is an interprime number because it is at equal distance from previous prime (3256861) and next prime (3256871).

It is a super-2 number, since 2×3256866² = 21214352283912, which contains 22 as substring.

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 3256866.

It is not an unprimeable number, because it can be changed into a prime (3256861) 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, 30385 + ... + 30491.

It is an arithmetic number, because the mean of its divisors is an integer number (157950).

Almost surely, 2^3256866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3256866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3790800).

3256866 is an abundant number, since it is smaller than the sum of its proper divisors (4324734).

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

3256866 is a wasteful number, since it uses less digits than its factorization.

3256866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 220 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 3256866 is about 1804.6789188108. The cubic root of 3256866 is about 148.2290402968.

The spelling of 3256866 in words is "three million, two hundred fifty-six thousand, eight hundred sixty-six".