9987670 has 96 divisors (see below), whose sum is σ = 24377760. Its totient is φ = 2903040.

The previous prime is 9987643. The next prime is 9987671. The reversal of 9987670 is 767899.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9987670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91576 + ... + 91684.

It is an arithmetic number, because the mean of its divisors is an integer number (253935).

Almost surely, 2^9987670 is an apocalyptic number.

9987670 is an abundant number, since it is smaller than the sum of its proper divisors (14390090).

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

9987670 is a wasteful number, since it uses less digits than its factorization.

9987670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 9987670 is about 3160.3275146731. The cubic root of 9987670 is about 215.3548853196.

It can be divided in two parts, 998 and 7670, that added together give a palindrome (8668).

The spelling of 9987670 in words is "nine million, nine hundred eighty-seven thousand, six hundred seventy".