798664 has 8 divisors (see below), whose sum is σ = 1497510. Its totient is φ = 399328.

The previous prime is 798649. The next prime is 798667. The reversal of 798664 is 466897.

798664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 736164 + 62500 = 858^2 + 250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (798667) by changing a digit.

798664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49909 + ... + 49924.

2⁷⁹⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

798664 is a deficient number, since it is larger than the sum of its proper divisors (698846).

798664 is a wasteful number, since it uses less digits than its factorization.

798664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99839 (or 99835 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 798664 is about 893.6800322263. The cubic root of 798664 is about 92.7800715234.

The spelling of 798664 in words is "seven hundred ninety-eight thousand, six hundred sixty-four".