998799166 has 8 divisors (see below), whose sum is σ = 1502152920. Its totient is φ = 498081528.

The previous prime is 998799143. The next prime is 998799167. The reversal of 998799166 is 661997899.

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

It is a pancake number, because a pancake can be divided into 998799166 parts by 44694 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 998799098 and 998799107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998799167) 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, 658081 + ... + 659596.

It is an arithmetic number, because the mean of its divisors is an integer number (187769115).

Almost surely, 2^998799166 is an apocalyptic number.

998799166 is a deficient number, since it is larger than the sum of its proper divisors (503353754).

998799166 is a wasteful number, since it uses less digits than its factorization.

998799166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318058.

The product of its digits is 13226976, while the sum is 64.

The square root of 998799166 is about 31603.7840455854. The cubic root of 998799166 is about 999.5995616705.

The spelling of 998799166 in words is "nine hundred ninety-eight million, seven hundred ninety-nine thousand, one hundred sixty-six".