987647800 has 24 divisors (see below), whose sum is σ = 2296281600. Its totient is φ = 395059040.

The previous prime is 987647753. The next prime is 987647813. The reversal of 987647800 is 8746789.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2468920 + ... + 2469319.

It is an arithmetic number, because the mean of its divisors is an integer number (95678400).

Almost surely, 2^987647800 is an apocalyptic number.

It is an amenable number.

987647800 is an abundant number, since it is smaller than the sum of its proper divisors (1308633800).

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

987647800 is a wasteful number, since it uses less digits than its factorization.

987647800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938255 (or 4938246 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 987647800 is about 31426.8643042859. The cubic root of 987647800 is about 995.8655297134.

The spelling of 987647800 in words is "nine hundred eighty-seven million, six hundred forty-seven thousand, eight hundred".