998045578 has 16 divisors (see below), whose sum is σ = 1565565696. Its totient is φ = 476285040.

The previous prime is 998045569. The next prime is 998045579. The reversal of 998045578 is 875540899.

It is not an unprimeable number, because it can be changed into a prime (998045579) 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, 2133 + ... + 44728.

It is an arithmetic number, because the mean of its divisors is an integer number (97847856).

Almost surely, 2^998045578 is an apocalyptic number.

998045578 is a deficient number, since it is larger than the sum of its proper divisors (567520118).

998045578 is a wasteful number, since it uses less digits than its factorization.

998045578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47349.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The square root of 998045578 is about 31591.8593628169. The cubic root of 998045578 is about 999.3481011202.

The spelling of 998045578 in words is "nine hundred ninety-eight million, forty-five thousand, five hundred seventy-eight".