987880806 has 32 divisors (see below), whose sum is σ = 2394864000. Its totient is φ = 299357640.

The previous prime is 987880801. The next prime is 987880847. The reversal of 987880806 is 608088789.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987880801) 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, 830956 + ... + 832143.

It is an arithmetic number, because the mean of its divisors is an integer number (74839500).

Almost surely, 2^987880806 is an apocalyptic number.

987880806 is an abundant number, since it is smaller than the sum of its proper divisors (1406983194).

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

987880806 is a wasteful number, since it uses less digits than its factorization.

987880806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663121 (or 1663115 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 987880806 is about 31430.5712006639. The cubic root of 987880806 is about 995.9438384649.

The spelling of 987880806 in words is "nine hundred eighty-seven million, eight hundred eighty thousand, eight hundred six".