791887 has 2 divisors, whose sum is σ = 791888. Its totient is φ = 791886.

The previous prime is 791851. The next prime is 791891. The reversal of 791887 is 788197.

791887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791827) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395943 + 395944.

It is an arithmetic number, because the mean of its divisors is an integer number (395944).

2⁷⁹¹⁸⁸⁷ is an apocalyptic number.

791887 is a deficient number, since it is larger than the sum of its proper divisors (1).

791887 is an equidigital number, since it uses as much as digits as its factorization.

791887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 40.

The square root of 791887 is about 889.8803290331. The cubic root of 791887 is about 92.5168997610.

The spelling of 791887 in words is "seven hundred ninety-one thousand, eight hundred eighty-seven".