10666216 has 32 divisors (see below), whose sum is σ = 22186080. Its totient is φ = 4766400.

The previous prime is 10666213. The next prime is 10666219. The reversal of 10666216 is 61266601.

It is an interprime number because it is at equal distance from previous prime (10666213) and next prime (10666219).

It is a super-2 number, since 2×10666216² = 227536327517312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10666213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4375 + ... + 6361.

It is an arithmetic number, because the mean of its divisors is an integer number (693315).

Almost surely, 2^10666216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10666216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11093040).

10666216 is an abundant number, since it is smaller than the sum of its proper divisors (11519864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10666216 is a wasteful number, since it uses less digits than its factorization.

10666216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2061 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 10666216 is about 3265.9173290211. The cubic root of 10666216 is about 220.1253830732.

The spelling of 10666216 in words is "ten million, six hundred sixty-six thousand, two hundred sixteen".