998767 has 24 divisors (see below), whose sum is σ = 1354320. Its totient is φ = 725760.

The previous prime is 998759. The next prime is 998779. The reversal of 998767 is 767899.

It is not a de Polignac number, because 998767 - 2³ = 998759 is a prime.

Its product of digits (190512) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9109 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (56430).

2⁹⁹⁸⁷⁶⁷ is an apocalyptic number.

998767 is a deficient number, since it is larger than the sum of its proper divisors (355553).

998767 is a wasteful number, since it uses less digits than its factorization.

998767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 144 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The square root of 998767 is about 999.3833098466. The cubic root of 998767 is about 99.9588830963.

The spelling of 998767 in words is "nine hundred ninety-eight thousand, seven hundred sixty-seven".