228667801 has 2 divisors, whose sum is σ = 228667802. Its totient is φ = 228667800.

The previous prime is 228667787. The next prime is 228667819. The reversal of 228667801 is 108766822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204461401 + 24206400 = 14299^2 + 4920^2 .

It is a cyclic number.

It is not a de Polignac number, because 228667801 - 2²³ = 220279193 is a prime.

It is not a weakly prime, because it can be changed into another prime (228667841) 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 as a sum of consecutive naturals, namely, 114333900 + 114333901.

It is an arithmetic number, because the mean of its divisors is an integer number (114333901).

Almost surely, 2^228667801 is an apocalyptic number.

It is an amenable number.

228667801 is a deficient number, since it is larger than the sum of its proper divisors (1).

228667801 is an equidigital number, since it uses as much as digits as its factorization.

228667801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 228667801 is about 15121.7658029742. The cubic root of 228667801 is about 611.5073364683.

The spelling of 228667801 in words is "two hundred twenty-eight million, six hundred sixty-seven thousand, eight hundred one".