10705666 has 4 divisors (see below), whose sum is σ = 16058502. Its totient is φ = 5352832.

The previous prime is 10705661. The next prime is 10705687. The reversal of 10705666 is 66650701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66650701 = 13 ⋅5126977.

It can be written as a sum of positive squares in only one way, i.e., 9090225 + 1615441 = 3015^2 + 1271^2 .

It is a super-2 number, since 2×10705666² = 229222569007112, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10705661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2676415 + ... + 2676418.

Almost surely, 2^10705666 is an apocalyptic number.

10705666 is a deficient number, since it is larger than the sum of its proper divisors (5352836).

10705666 is an equidigital number, since it uses as much as digits as its factorization.

10705666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352835.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 10705666 is about 3271.9514055071. The cubic root of 10705666 is about 220.3964339681.

The spelling of 10705666 in words is "ten million, seven hundred five thousand, six hundred sixty-six".