10667666 has 8 divisors (see below), whose sum is σ = 16053564. Its totient is φ = 5316480.

The previous prime is 10667663. The next prime is 10667669. The reversal of 10667666 is 66676601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10667663) and next prime (10667669).

It can be written as a sum of positive squares in 2 ways, for example, as 10530025 + 137641 = 3245^2 + 371^2 .

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

It is a super-2 number, since 2×10667666² = 227598195775112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10667663) 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, 7895 + ... + 9146.

Almost surely, 2^10667666 is an apocalyptic number.

10667666 is a deficient number, since it is larger than the sum of its proper divisors (5385898).

10667666 is a wasteful number, since it uses less digits than its factorization.

10667666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17356.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 10667666 is about 3266.1393111746. The cubic root of 10667666 is about 220.1353574741.

The spelling of 10667666 in words is "ten million, six hundred sixty-seven thousand, six hundred sixty-six".