616398227 has 2 divisors, whose sum is σ = 616398228. Its totient is φ = 616398226.

The previous prime is 616398173. The next prime is 616398239. The reversal of 616398227 is 722893616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616398227 is a prime.

It is not a weakly prime, because it can be changed into another prime (616397227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308199113 + 308199114.

It is an arithmetic number, because the mean of its divisors is an integer number (308199114).

Almost surely, 2^616398227 is an apocalyptic number.

616398227 is a deficient number, since it is larger than the sum of its proper divisors (1).

616398227 is an equidigital number, since it uses as much as digits as its factorization.

616398227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 616398227 is about 24827.3685073549. The cubic root of 616398227 is about 851.0474869283.

The spelling of 616398227 in words is "six hundred sixteen million, three hundred ninety-eight thousand, two hundred twenty-seven".