798685 has 4 divisors (see below), whose sum is σ = 958428. Its totient is φ = 638944.

The previous prime is 798667. The next prime is 798691. The reversal of 798685 is 586897.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191844 + 606841 = 438^2 + 779^2 .

It is a cyclic number.

It is not a de Polignac number, because 798685 - 2⁹ = 798173 is a prime.

It is a d-powerful number, because it can be written as 7³ + 9⁶ + 6² + 8⁴ + 8⁶ + 5⁴ .

It is a Duffinian number.

798685 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79864 + ... + 79873.

It is an arithmetic number, because the mean of its divisors is an integer number (239607).

2⁷⁹⁸⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

798685 is a deficient number, since it is larger than the sum of its proper divisors (159743).

798685 is a wasteful number, since it uses less digits than its factorization.

798685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159742.

The product of its digits is 120960, while the sum is 43.

The square root of 798685 is about 893.6917813206. The cubic root of 798685 is about 92.7808846999.

The spelling of 798685 in words is "seven hundred ninety-eight thousand, six hundred eighty-five".