791663 has 2 divisors, whose sum is σ = 791664. Its totient is φ = 791662.

The previous prime is 791657. The next prime is 791677. The reversal of 791663 is 366197.

791663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 791663 - 2⁶ = 791599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395831 + 395832.

It is an arithmetic number, because the mean of its divisors is an integer number (395832).

2⁷⁹¹⁶⁶³ is an apocalyptic number.

791663 is a deficient number, since it is larger than the sum of its proper divisors (1).

791663 is an equidigital number, since it uses as much as digits as its factorization.

791663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 32.

The square root of 791663 is about 889.7544605114. The cubic root of 791663 is about 92.5081755618.

The spelling of 791663 in words is "seven hundred ninety-one thousand, six hundred sixty-three".