227640164 has 6 divisors (see below), whose sum is σ = 398370294. Its totient is φ = 113820080.

The previous prime is 227640143. The next prime is 227640181. The reversal of 227640164 is 461046722.

It can be written as a sum of positive squares in only one way, i.e., 214622500 + 13017664 = 14650^2 + 3608^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 227640164.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28455017 + ... + 28455024.

It is an arithmetic number, because the mean of its divisors is an integer number (66395049).

Almost surely, 2^227640164 is an apocalyptic number.

It is an amenable number.

227640164 is a deficient number, since it is larger than the sum of its proper divisors (170730130).

227640164 is a wasteful number, since it uses less digits than its factorization.

227640164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56910045 (or 56910043 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 227640164 is about 15087.7488049079. The cubic root of 227640164 is about 610.5899193280.

Adding to 227640164 its reverse (461046722), we get a palindrome (688686886).

The spelling of 227640164 in words is "two hundred twenty-seven million, six hundred forty thousand, one hundred sixty-four".