227294664649 has 4 divisors (see below), whose sum is σ = 244778869636. Its totient is φ = 209810459664.

The previous prime is 227294664643. The next prime is 227294664719. The reversal of 227294664649 is 946466492722.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50501325625 + 176793339024 = 224725^2 + 420468^2 .

It is not a de Polignac number, because 227294664649 - 2⁷ = 227294664521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227294664643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8742102474 + ... + 8742102499.

It is an arithmetic number, because the mean of its divisors is an integer number (61194717409).

Almost surely, 2^227294664649 is an apocalyptic number.

It is an amenable number.

227294664649 is a deficient number, since it is larger than the sum of its proper divisors (17484204987).

227294664649 is a wasteful number, since it uses less digits than its factorization.

227294664649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484204986.

The product of its digits is 62705664, while the sum is 61.

The spelling of 227294664649 in words is "two hundred twenty-seven billion, two hundred ninety-four million, six hundred sixty-four thousand, six hundred forty-nine".