228523663 has 2 divisors, whose sum is σ = 228523664. Its totient is φ = 228523662.

The previous prime is 228523657. The next prime is 228523721. The reversal of 228523663 is 366325822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228523663 - 2⁹ = 228523151 is a prime.

It is equal to p_12565828 and since 228523663 and 12565828 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228523613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114261831 + 114261832.

It is an arithmetic number, because the mean of its divisors is an integer number (114261832).

Almost surely, 2^228523663 is an apocalyptic number.

228523663 is a deficient number, since it is larger than the sum of its proper divisors (1).

228523663 is an equidigital number, since it uses as much as digits as its factorization.

228523663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 228523663 is about 15116.9991400410. Note that the first 3 decimals coincide. The cubic root of 228523663 is about 611.3788240291.

The spelling of 228523663 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, six hundred sixty-three".