791616863 has 2 divisors, whose sum is σ = 791616864. Its totient is φ = 791616862.

The previous prime is 791616823. The next prime is 791616871. The reversal of 791616863 is 368616197.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 791616863 - 2⁸ = 791616607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791616803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395808431 + 395808432.

It is an arithmetic number, because the mean of its divisors is an integer number (395808432).

Almost surely, 2^791616863 is an apocalyptic number.

791616863 is a deficient number, since it is larger than the sum of its proper divisors (1).

791616863 is an equidigital number, since it uses as much as digits as its factorization.

791616863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 791616863 is about 28135.6866452553. The cubic root of 791616863 is about 925.0637844499.

The spelling of 791616863 in words is "seven hundred ninety-one million, six hundred sixteen thousand, eight hundred sixty-three".