227491065 has 16 divisors (see below), whose sum is σ = 404428800. Its totient is φ = 121328496.

The previous prime is 227491049. The next prime is 227491067. The reversal of 227491065 is 560194722.

It is not a de Polignac number, because 227491065 - 2⁴ = 227491049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (227491067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842425 + ... + 842694.

It is an arithmetic number, because the mean of its divisors is an integer number (25276800).

Almost surely, 2^227491065 is an apocalyptic number.

It is an amenable number.

227491065 is a deficient number, since it is larger than the sum of its proper divisors (176937735).

227491065 is a wasteful number, since it uses less digits than its factorization.

227491065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685133 (or 1685127 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 227491065 is about 15082.8069337242. The cubic root of 227491065 is about 610.4565828259.

It can be divided in two parts, 2274 and 91065, that added together give a palindrome (93339).

The spelling of 227491065 in words is "two hundred twenty-seven million, four hundred ninety-one thousand, sixty-five".