987678198 has 40 divisors (see below), whose sum is σ = 2383376688. Its totient is φ = 303900336.

The previous prime is 987678191. The next prime is 987678217. The reversal of 987678198 is 891876789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987678191) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 232386 + ... + 236597.

Almost surely, 2^987678198 is an apocalyptic number.

987678198 is an abundant number, since it is smaller than the sum of its proper divisors (1395698490).

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

987678198 is a wasteful number, since it uses less digits than its factorization.

987678198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469010 (or 469001 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The square root of 987678198 is about 31427.3479313798. The cubic root of 987678198 is about 995.8757465842.

The spelling of 987678198 in words is "nine hundred eighty-seven million, six hundred seventy-eight thousand, one hundred ninety-eight".