798166663 has 4 divisors (see below), whose sum is σ = 912190480. Its totient is φ = 684142848.

The previous prime is 798166657. The next prime is 798166667. The reversal of 798166663 is 366661897.

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

It is a cyclic number.

It is not a de Polignac number, because 798166663 - 2²⁹ = 261295751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 798166663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798166667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57011898 + ... + 57011911.

It is an arithmetic number, because the mean of its divisors is an integer number (228047620).

Almost surely, 2^798166663 is an apocalyptic number.

798166663 is a deficient number, since it is larger than the sum of its proper divisors (114023817).

798166663 is a wasteful number, since it uses less digits than its factorization.

798166663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114023816.

The product of its digits is 1959552, while the sum is 52.

The square root of 798166663 is about 28251.8435327679. The cubic root of 798166663 is about 927.6080912863.

The spelling of 798166663 in words is "seven hundred ninety-eight million, one hundred sixty-six thousand, six hundred sixty-three".