227091897 has 8 divisors (see below), whose sum is σ = 336432480. Its totient is φ = 151394580.

The previous prime is 227091881. The next prime is 227091923. The reversal of 227091897 is 798190722.

227091897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 227091897 - 2⁴ = 227091881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (227091817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205379 + ... + 4205432.

It is an arithmetic number, because the mean of its divisors is an integer number (42054060).

Almost surely, 2^227091897 is an apocalyptic number.

227091897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

227091897 is a deficient number, since it is larger than the sum of its proper divisors (109340583).

227091897 is an equidigital number, since it uses as much as digits as its factorization.

227091897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410820 (or 8410814 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 227091897 is about 15069.5685737847. The cubic root of 227091897 is about 610.0993271920.

The spelling of 227091897 in words is "two hundred twenty-seven million, ninety-one thousand, eight hundred ninety-seven".