801791 has 2 divisors, whose sum is σ = 801792. Its totient is φ = 801790.

The previous prime is 801761. The next prime is 801809. The reversal of 801791 is 197108.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801791 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 801791.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 801791.

It is not a weakly prime, because it can be changed into another prime (801701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400895 + 400896.

It is an arithmetic number, because the mean of its divisors is an integer number (400896).

2⁸⁰¹⁷⁹¹ is an apocalyptic number.

801791 is a deficient number, since it is larger than the sum of its proper divisors (1).

801791 is an equidigital number, since it uses as much as digits as its factorization.

801791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 801791 is about 895.4278307044. The cubic root of 801791 is about 92.9010007528.

Adding to 801791 its reverse (197108), we get a palindrome (998899).

The spelling of 801791 in words is "eight hundred one thousand, seven hundred ninety-one".