801709 has 2 divisors, whose sum is σ = 801710. Its totient is φ = 801708.

The previous prime is 801707. The next prime is 801733. The reversal of 801709 is 907108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 126025 = 822^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 801709 - 2¹ = 801707 is a prime.

Together with 801707, it forms a pair of twin primes.

801709 is a lucky number.

It is equal to p₆₄₀₈₇ and since 801709 and 64087 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

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, 400854 + 400855.

It is an arithmetic number, because the mean of its divisors is an integer number (400855).

2⁸⁰¹⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

801709 is a deficient number, since it is larger than the sum of its proper divisors (1).

801709 is an equidigital number, since it uses as much as digits as its factorization.

801709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 801709 is about 895.3820413656. The cubic root of 801709 is about 92.8978336175.

The spelling of 801709 in words is "eight hundred one thousand, seven hundred nine".