798566 has 4 divisors (see below), whose sum is σ = 1197852. Its totient is φ = 399282.

The previous prime is 798533. The next prime is 798569. The reversal of 798566 is 665897.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199640 + ... + 199643.

It is an arithmetic number, because the mean of its divisors is an integer number (299463).

2⁷⁹⁸⁵⁶⁶ is an apocalyptic number.

798566 is a deficient number, since it is larger than the sum of its proper divisors (399286).

798566 is a wasteful number, since it uses less digits than its factorization.

798566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399285.

The product of its digits is 90720, while the sum is 41.

The square root of 798566 is about 893.6252010771. The cubic root of 798566 is about 92.7762765111.

The spelling of 798566 in words is "seven hundred ninety-eight thousand, five hundred sixty-six".