616191047 has 2 divisors, whose sum is σ = 616191048. Its totient is φ = 616191046.

The previous prime is 616190941. The next prime is 616191049. The reversal of 616191047 is 740191616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616191047 - 2¹⁰ = 616190023 is a prime.

Together with 616191049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 616190998 and 616191016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616191049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308095523 + 308095524.

It is an arithmetic number, because the mean of its divisors is an integer number (308095524).

Almost surely, 2^616191047 is an apocalyptic number.

616191047 is a deficient number, since it is larger than the sum of its proper divisors (1).

616191047 is an equidigital number, since it uses as much as digits as its factorization.

616191047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 616191047 is about 24823.1957451090. The cubic root of 616191047 is about 850.9521266191.

The spelling of 616191047 in words is "six hundred sixteen million, one hundred ninety-one thousand, forty-seven".