998475878 has 8 divisors (see below), whose sum is σ = 1576540920. Its totient is φ = 472962240.

The previous prime is 998475853. The next prime is 998475889. The reversal of 998475878 is 878574899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13137803 + ... + 13137878.

It is an arithmetic number, because the mean of its divisors is an integer number (197067615).

Almost surely, 2^998475878 is an apocalyptic number.

998475878 is a deficient number, since it is larger than the sum of its proper divisors (578065042).

998475878 is a wasteful number, since it uses less digits than its factorization.

998475878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26275702.

The product of its digits is 40642560, while the sum is 65.

The square root of 998475878 is about 31598.6689276621. The cubic root of 998475878 is about 999.4917010092.

The spelling of 998475878 in words is "nine hundred ninety-eight million, four hundred seventy-five thousand, eight hundred seventy-eight".