227487681 has 6 divisors (see below), whose sum is σ = 328593330. Its totient is φ = 151658448.

The previous prime is 227487679. The next prime is 227487697. The reversal of 227487681 is 186784722.

It can be written as a sum of positive squares in only one way, i.e., 186732225 + 40755456 = 13665^2 + 6384^2 .

It is not a de Polignac number, because 227487681 - 2¹ = 227487679 is a prime.

It is a super-2 number, since 2×227487681² = 103501290013515522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (227487881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12638196 + ... + 12638213.

It is an arithmetic number, because the mean of its divisors is an integer number (54765555).

Almost surely, 2^227487681 is an apocalyptic number.

It is an amenable number.

227487681 is a deficient number, since it is larger than the sum of its proper divisors (101105649).

227487681 is a wasteful number, since it uses less digits than its factorization.

227487681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25276415 (or 25276412 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 227487681 is about 15082.6947525964. The cubic root of 227487681 is about 610.4535559007.

The spelling of 227487681 in words is "two hundred twenty-seven million, four hundred eighty-seven thousand, six hundred eighty-one".