227961887 has 2 divisors, whose sum is σ = 227961888. Its totient is φ = 227961886.

The previous prime is 227961883. The next prime is 227961889. The reversal of 227961887 is 788169722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 227961887 - 2² = 227961883 is a prime.

Together with 227961889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227961883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113980943 + 113980944.

It is an arithmetic number, because the mean of its divisors is an integer number (113980944).

Almost surely, 2^227961887 is an apocalyptic number.

227961887 is a deficient number, since it is larger than the sum of its proper divisors (1).

227961887 is an equidigital number, since it uses as much as digits as its factorization.

227961887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 50.

The square root of 227961887 is about 15098.4067702523. The cubic root of 227961887 is about 610.8774320802.

The spelling of 227961887 in words is "two hundred twenty-seven million, nine hundred sixty-one thousand, eight hundred eighty-seven".