10291666 has 24 divisors (see below), whose sum is σ = 19592496. Its totient is φ = 4009320.

The previous prime is 10291651. The next prime is 10291691. The reversal of 10291666 is 66619201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3696 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (816354).

Almost surely, 2^10291666 is an apocalyptic number.

10291666 is a deficient number, since it is larger than the sum of its proper divisors (9300830).

10291666 is a wasteful number, since it uses less digits than its factorization.

10291666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9574 (or 9567 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 10291666 is about 3208.0626552485. The cubic root of 10291666 is about 217.5180132172.

The spelling of 10291666 in words is "ten million, two hundred ninety-one thousand, six hundred sixty-six".