998866207 has 4 divisors (see below), whose sum is σ = 1000528816. Its totient is φ = 997203600.

The previous prime is 998866201. The next prime is 998866213. The reversal of 998866207 is 702668899.

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

It is an interprime number because it is at equal distance from previous prime (998866201) and next prime (998866213).

It is a cyclic number.

It is not a de Polignac number, because 998866207 - 2³ = 998866199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998866201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830403 + ... + 831604.

It is an arithmetic number, because the mean of its divisors is an integer number (250132204).

Almost surely, 2^998866207 is an apocalyptic number.

998866207 is a deficient number, since it is larger than the sum of its proper divisors (1662609).

998866207 is a wasteful number, since it uses less digits than its factorization.

998866207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662608.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 998866207 is about 31604.8446760936. The cubic root of 998866207 is about 999.6219260781.

The spelling of 998866207 in words is "nine hundred ninety-eight million, eight hundred sixty-six thousand, two hundred seven".