228981667 has 2 divisors, whose sum is σ = 228981668. Its totient is φ = 228981666.

The previous prime is 228981661. The next prime is 228981689. The reversal of 228981667 is 766189822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228981667 - 2³ = 228981659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228981667.

It is not a weakly prime, because it can be changed into another prime (228981661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114490833 + 114490834.

It is an arithmetic number, because the mean of its divisors is an integer number (114490834).

Almost surely, 2^228981667 is an apocalyptic number.

228981667 is a deficient number, since it is larger than the sum of its proper divisors (1).

228981667 is an equidigital number, since it uses as much as digits as its factorization.

228981667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 49.

The square root of 228981667 is about 15132.1401989276. The cubic root of 228981667 is about 611.7869904958.

The spelling of 228981667 in words is "two hundred twenty-eight million, nine hundred eighty-one thousand, six hundred sixty-seven".