10216566 has 24 divisors (see below), whose sum is σ = 23301720. Its totient is φ = 3226176.

The previous prime is 10216561. The next prime is 10216567. The reversal of 10216566 is 66561201.

It is a happy number.

10216566 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 656 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10216561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14595 + ... + 15278.

It is an arithmetic number, because the mean of its divisors is an integer number (970905).

Almost surely, 2^10216566 is an apocalyptic number.

10216566 is an abundant number, since it is smaller than the sum of its proper divisors (13085154).

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

10216566 is a wasteful number, since it uses less digits than its factorization.

10216566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29900 (or 29897 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 10216566 is about 3196.3363402496. The cubic root of 10216566 is about 216.9876326420.

Adding to 10216566 its reverse (66561201), we get a palindrome (76777767).

The spelling of 10216566 in words is "ten million, two hundred sixteen thousand, five hundred sixty-six".