10256666 has 32 divisors (see below), whose sum is σ = 18724608. Its totient is φ = 4118400.

The previous prime is 10256663. The next prime is 10256693. The reversal of 10256666 is 66665201.

It is not an unprimeable number, because it can be changed into a prime (10256663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16766 + ... + 17366.

It is an arithmetic number, because the mean of its divisors is an integer number (585144).

Almost surely, 2^10256666 is an apocalyptic number.

10256666 is a deficient number, since it is larger than the sum of its proper divisors (8467942).

10256666 is a wasteful number, since it uses less digits than its factorization.

10256666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 10256666 is about 3202.6030038080. The cubic root of 10256666 is about 217.2711540247.

The spelling of 10256666 in words is "ten million, two hundred fifty-six thousand, six hundred sixty-six".