228370687 has 2 divisors, whose sum is σ = 228370688. Its totient is φ = 228370686.

The previous prime is 228370631. The next prime is 228370729. The reversal of 228370687 is 786073822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228370687 - 2⁷ = 228370559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228370607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114185343 + 114185344.

It is an arithmetic number, because the mean of its divisors is an integer number (114185344).

Almost surely, 2^228370687 is an apocalyptic number.

228370687 is a deficient number, since it is larger than the sum of its proper divisors (1).

228370687 is an equidigital number, since it uses as much as digits as its factorization.

228370687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 228370687 is about 15111.9385586363. The cubic root of 228370687 is about 611.2423725669.

The spelling of 228370687 in words is "two hundred twenty-eight million, three hundred seventy thousand, six hundred eighty-seven".