227771985 has 32 divisors (see below), whose sum is σ = 417070080. Its totient is φ = 103981248.

The previous prime is 227771983. The next prime is 227771993. The reversal of 227771985 is 589177722.

It is a happy number.

It is not a de Polignac number, because 227771985 - 2¹ = 227771983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (227771983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131334 + ... + 133056.

It is an arithmetic number, because the mean of its divisors is an integer number (13033440).

Almost surely, 2^227771985 is an apocalyptic number.

It is an amenable number.

227771985 is a deficient number, since it is larger than the sum of its proper divisors (189298095).

227771985 is a wasteful number, since it uses less digits than its factorization.

227771985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997.

The product of its digits is 493920, while the sum is 48.

The square root of 227771985 is about 15092.1166507551. The cubic root of 227771985 is about 610.7077559479.

The spelling of 227771985 in words is "two hundred twenty-seven million, seven hundred seventy-one thousand, nine hundred eighty-five".