215000166 has 16 divisors (see below), whose sum is σ = 430149744. Its totient is φ = 71641824.

The previous prime is 215000117. The next prime is 215000167. The reversal of 215000166 is 661000512.

It is a happy number.

215000166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215000167) 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, 23136 + ... + 31068.

It is an arithmetic number, because the mean of its divisors is an integer number (26884359).

Almost surely, 2^215000166 is an apocalyptic number.

215000166 is an abundant number, since it is smaller than the sum of its proper divisors (215149578).

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

215000166 is a wasteful number, since it uses less digits than its factorization.

215000166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 215000166 is about 14662.8839591671. The cubic root of 215000166 is about 599.0727956694.

Adding to 215000166 its reverse (661000512), we get a palindrome (876000678).

The spelling of 215000166 in words is "two hundred fifteen million, one hundred sixty-six", and thus it is an aban number.