998547 has 8 divisors (see below), whose sum is σ = 1452480. Its totient is φ = 605160.

The previous prime is 998539. The next prime is 998551. The reversal of 998547 is 745899.

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

It is not a de Polignac number, because 998547 - 2³ = 998539 is a prime.

It is a super-2 number, since 2×998547² = 1994192222418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 998499 and 998508.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998547.

It is not an unprimeable number, because it can be changed into a prime (998527) 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, 15097 + ... + 15162.

It is an arithmetic number, because the mean of its divisors is an integer number (181560).

2⁹⁹⁸⁵⁴⁷ is an apocalyptic number.

998547 is a deficient number, since it is larger than the sum of its proper divisors (453933).

998547 is a wasteful number, since it uses less digits than its factorization.

998547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30273.

The product of its digits is 90720, while the sum is 42.

The square root of 998547 is about 999.2732359070. The cubic root of 998547 is about 99.9515431898.

It can be divided in two parts, 99 and 8547, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 998547 in words is "nine hundred ninety-eight thousand, five hundred forty-seven".