998353653 has 16 divisors (see below), whose sum is σ = 1452681216. Its totient is φ = 604841840.

The previous prime is 998353639. The next prime is 998353693. The reversal of 998353653 is 356353899.

It is a cyclic number.

It is not a de Polignac number, because 998353653 - 2⁴ = 998353637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998353596 and 998353605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998353693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162076 + ... + 168122.

It is an arithmetic number, because the mean of its divisors is an integer number (90792576).

Almost surely, 2^998353653 is an apocalyptic number.

It is an amenable number.

998353653 is a deficient number, since it is larger than the sum of its proper divisors (454327563).

998353653 is a wasteful number, since it uses less digits than its factorization.

998353653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11064.

The product of its digits is 2624400, while the sum is 51.

The square root of 998353653 is about 31596.7348471325. The cubic root of 998353653 is about 999.4509162289.

It can be divided in two parts, 9983 and 53653, that added together give a palindrome (63636).

The spelling of 998353653 in words is "nine hundred ninety-eight million, three hundred fifty-three thousand, six hundred fifty-three".