791163647 has 2 divisors, whose sum is σ = 791163648. Its totient is φ = 791163646.

The previous prime is 791163619. The next prime is 791163661. The reversal of 791163647 is 746361197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 791163647 - 2²⁸ = 522728191 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 791163598 and 791163607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791163677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395581823 + 395581824.

It is an arithmetic number, because the mean of its divisors is an integer number (395581824).

Almost surely, 2^791163647 is an apocalyptic number.

791163647 is a deficient number, since it is larger than the sum of its proper divisors (1).

791163647 is an equidigital number, since it uses as much as digits as its factorization.

791163647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 791163647 is about 28127.6313791261. The cubic root of 791163647 is about 924.8872117653.

The spelling of 791163647 in words is "seven hundred ninety-one million, one hundred sixty-three thousand, six hundred forty-seven".