998397675 has 144 divisors (see below), whose sum is σ = 2104820640. Its totient is φ = 446976000.

The previous prime is 998397671. The next prime is 998397679. The reversal of 998397675 is 576793899.

It is an interprime number because it is at equal distance from previous prime (998397671) and next prime (998397679).

It is not a de Polignac number, because 998397675 - 2² = 998397671 is a prime.

Its product of digits (25719120) is a multiple of the sum of its prime divisors (486).

It is not an unprimeable number, because it can be changed into a prime (998397671) 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 143 ways as a sum of consecutive naturals, for example, 2566381 + ... + 2566769.

It is an arithmetic number, because the mean of its divisors is an integer number (14616810).

Almost surely, 2^998397675 is an apocalyptic number.

998397675 is an abundant number, since it is smaller than the sum of its proper divisors (1106422965).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998397675 is a wasteful number, since it uses less digits than its factorization.

998397675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 486 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 63.

The square root of 998397675 is about 31597.4314620667. The cubic root of 998397675 is about 999.4656061407.

The spelling of 998397675 in words is "nine hundred ninety-eight million, three hundred ninety-seven thousand, six hundred seventy-five".