227121664 has 120 divisors (see below), whose sum is σ = 576579168. Its totient is φ = 88381440.

The previous prime is 227121659. The next prime is 227121677. The reversal of 227121664 is 466121722.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275557 + ... + 276379.

Almost surely, 2^227121664 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 227121664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288289584).

227121664 is an abundant number, since it is smaller than the sum of its proper divisors (349457504).

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

227121664 is an equidigital number, since it uses as much as digits as its factorization.

227121664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 843 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 227121664 is about 15070.5561941157. The cubic root of 227121664 is about 610.1259831163.

The spelling of 227121664 in words is "two hundred twenty-seven million, one hundred twenty-one thousand, six hundred sixty-four".