10402666 has 8 divisors (see below), whose sum is σ = 15630624. Its totient is φ = 5192460.

The previous prime is 10402649. The next prime is 10402669. The reversal of 10402666 is 66620401.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 10402666.

It is not an unprimeable number, because it can be changed into a prime (10402669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2860 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (1953828).

Almost surely, 2^10402666 is an apocalyptic number.

10402666 is a deficient number, since it is larger than the sum of its proper divisors (5227958).

10402666 is an equidigital number, since it uses as much as digits as its factorization.

10402666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 10402666 is about 3225.3164185859. The cubic root of 10402666 is about 218.2972266432.

The spelling of 10402666 in words is "ten million, four hundred two thousand, six hundred sixty-six".