227640166 has 32 divisors (see below), whose sum is σ = 395787168. Its totient is φ = 97251840.

The previous prime is 227640143. The next prime is 227640181. The reversal of 227640166 is 661046722.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22741 + ... + 31183.

It is an arithmetic number, because the mean of its divisors is an integer number (12368349).

Almost surely, 2^227640166 is an apocalyptic number.

227640166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

227640166 is a deficient number, since it is larger than the sum of its proper divisors (168147002).

227640166 is a wasteful number, since it uses less digits than its factorization.

227640166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 227640166 is about 15087.7488711868. The cubic root of 227640166 is about 610.5899211162.

Adding to 227640166 its reverse (661046722), we get a palindrome (888686888).

The spelling of 227640166 in words is "two hundred twenty-seven million, six hundred forty thousand, one hundred sixty-six".