228307663 has 2 divisors, whose sum is σ = 228307664. Its totient is φ = 228307662.

The previous prime is 228307661. The next prime is 228307699. The reversal of 228307663 is 366703822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228307663 - 2¹ = 228307661 is a prime.

Together with 228307661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228307661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114153831 + 114153832.

It is an arithmetic number, because the mean of its divisors is an integer number (114153832).

Almost surely, 2^228307663 is an apocalyptic number.

228307663 is a deficient number, since it is larger than the sum of its proper divisors (1).

228307663 is an equidigital number, since it uses as much as digits as its factorization.

228307663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 228307663 is about 15109.8531759908. The cubic root of 228307663 is about 611.1861387246.

The spelling of 228307663 in words is "two hundred twenty-eight million, three hundred seven thousand, six hundred sixty-three".