998867 has 8 divisors (see below), whose sum is σ = 1053216. Its totient is φ = 945472.

The previous prime is 998861. The next prime is 998897. The reversal of 998867 is 768899.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998861) 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, 2993 + ... + 3309.

It is an arithmetic number, because the mean of its divisors is an integer number (131652).

2⁹⁹⁸⁸⁶⁷ is an apocalyptic number.

998867 is a deficient number, since it is larger than the sum of its proper divisors (54349).

998867 is a wasteful number, since it uses less digits than its factorization.

998867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477.

The product of its digits is 217728, while the sum is 47.

The square root of 998867 is about 999.4333394479. The cubic root of 998867 is about 99.9622190611.

The spelling of 998867 in words is "nine hundred ninety-eight thousand, eight hundred sixty-seven".