998361 has 48 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 494208.

The previous prime is 998353. The next prime is 998377. The reversal of 998361 is 163899.

It is not a de Polignac number, because 998361 - 2³ = 998353 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998361.

It is not an unprimeable number, because it can be changed into a prime (998311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18811 + ... + 18863.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2⁹⁹⁸³⁶¹ is an apocalyptic number.

998361 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

998361 is a deficient number, since it is larger than the sum of its proper divisors (888615).

998361 is a wasteful number, since it uses less digits than its factorization.

998361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 99 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 998361 is about 999.1801639344. The cubic root of 998361 is about 99.9453367914.

Adding to 998361 its product of digits (11664), we get a square (1010025 = 1005²).

The spelling of 998361 in words is "nine hundred ninety-eight thousand, three hundred sixty-one".