227748066 has 64 divisors (see below), whose sum is σ = 562464000. Its totient is φ = 59867136.

The previous prime is 227748023. The next prime is 227748067. The reversal of 227748066 is 660847722.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (227748067) 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, 244690 + ... + 245618.

It is an arithmetic number, because the mean of its divisors is an integer number (8788500).

Almost surely, 2^227748066 is an apocalyptic number.

227748066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 227748066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281232000).

227748066 is an abundant number, since it is smaller than the sum of its proper divisors (334715934).

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

227748066 is a wasteful number, since it uses less digits than its factorization.

227748066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 227748066 is about 15091.3241963719. The cubic root of 227748066 is about 610.6863777991.

The spelling of 227748066 in words is "two hundred twenty-seven million, seven hundred forty-eight thousand, sixty-six".