987565870 has 32 divisors (see below), whose sum is σ = 1895967648. Its totient is φ = 369067008.

The previous prime is 987565847. The next prime is 987565871. The reversal of 987565870 is 78565789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987565871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2089 + ... + 44491.

It is an arithmetic number, because the mean of its divisors is an integer number (59248989).

Almost surely, 2^987565870 is an apocalyptic number.

987565870 is a deficient number, since it is larger than the sum of its proper divisors (908401778).

987565870 is a wasteful number, since it uses less digits than its factorization.

987565870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42564.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The square root of 987565870 is about 31425.5607746306. The cubic root of 987565870 is about 995.8379917189.

The spelling of 987565870 in words is "nine hundred eighty-seven million, five hundred sixty-five thousand, eight hundred seventy".