998010866 has 8 divisors (see below), whose sum is σ = 1497872640. Its totient is φ = 498719988.

The previous prime is 998010847. The next prime is 998010883. The reversal of 998010866 is 668010899.

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

It is a super-3 number, since 3×998010866³ (a number of 28 digits) contains 333 as substring.

998010866 is a strobogrammatic number because it is the same when read upside-down.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 998010866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138326 + ... + 145361.

It is an arithmetic number, because the mean of its divisors is an integer number (187234080).

Almost surely, 2^998010866 is an apocalyptic number.

998010866 is a deficient number, since it is larger than the sum of its proper divisors (499861774).

998010866 is a wasteful number, since it uses less digits than its factorization.

998010866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285448.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 998010866 is about 31591.3099760045. The cubic root of 998010866 is about 999.3365152186.

The spelling of 998010866 in words is "nine hundred ninety-eight million, ten thousand, eight hundred sixty-six".