798818221 has 8 divisors (see below), whose sum is σ = 837226944. Its totient is φ = 760716000.

The previous prime is 798818213. The next prime is 798818233. The reversal of 798818221 is 122818897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 798818221 - 2³ = 798818213 is a prime.

It is a super-2 number, since 2×798818221² = 1276221100403209682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798818291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71280 + ... + 81721.

It is an arithmetic number, because the mean of its divisors is an integer number (104653368).

Almost surely, 2^798818221 is an apocalyptic number.

It is an amenable number.

798818221 is a deficient number, since it is larger than the sum of its proper divisors (38408723).

798818221 is a wasteful number, since it uses less digits than its factorization.

798818221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153251.

The product of its digits is 129024, while the sum is 46.

The square root of 798818221 is about 28263.3724279322. The cubic root of 798818221 is about 927.8604304351.

The spelling of 798818221 in words is "seven hundred ninety-eight million, eight hundred eighteen thousand, two hundred twenty-one".