998357 has 4 divisors (see below), whose sum is σ = 1003776. Its totient is φ = 992940.

The previous prime is 998353. The next prime is 998377. The reversal of 998357 is 753899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 998357 - 2² = 998353 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 (998353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2423 + ... + 2804.

It is an arithmetic number, because the mean of its divisors is an integer number (250944).

2⁹⁹⁸³⁵⁷ is an apocalyptic number.

It is an amenable number.

998357 is a deficient number, since it is larger than the sum of its proper divisors (5419).

998357 is a wasteful number, since it uses less digits than its factorization.

998357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5418.

The product of its digits is 68040, while the sum is 41.

The square root of 998357 is about 999.1781622914. The cubic root of 998357 is about 99.9452033120.

The spelling of 998357 in words is "nine hundred ninety-eight thousand, three hundred fifty-seven".