988806687 has 8 divisors (see below), whose sum is σ = 1438264320. Its totient is φ = 599276760.

The previous prime is 988806677. The next prime is 988806691. The reversal of 988806687 is 786608889.

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

It is not a de Polignac number, because 988806687 - 2⁴ = 988806671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 988806687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988806617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14981887 + ... + 14981952.

It is an arithmetic number, because the mean of its divisors is an integer number (179783040).

Almost surely, 2^988806687 is an apocalyptic number.

988806687 is a deficient number, since it is larger than the sum of its proper divisors (449457633).

988806687 is a wasteful number, since it uses less digits than its factorization.

988806687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29963853.

The product of its (nonzero) digits is 9289728, while the sum is 60.

The square root of 988806687 is about 31445.2967389401. The cubic root of 988806687 is about 996.2548873071.

The spelling of 988806687 in words is "nine hundred eighty-eight million, eight hundred six thousand, six hundred eighty-seven".