9986523 has 8 divisors (see below), whose sum is σ = 13417536. Its totient is φ = 6606600.

The previous prime is 9986507. The next prime is 9986539. The reversal of 9986523 is 3256899.

9986523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9986507) and next prime (9986539).

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

It is not a de Polignac number, because 9986523 - 2⁴ = 9986507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9986503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12313 + ... + 13098.

It is an arithmetic number, because the mean of its divisors is an integer number (1677192).

Almost surely, 2^9986523 is an apocalyptic number.

9986523 is a deficient number, since it is larger than the sum of its proper divisors (3431013).

9986523 is a wasteful number, since it uses less digits than its factorization.

9986523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25545.

The product of its digits is 116640, while the sum is 42.

The square root of 9986523 is about 3160.1460409291. The cubic root of 9986523 is about 215.3466411041.

The spelling of 9986523 in words is "nine million, nine hundred eighty-six thousand, five hundred twenty-three".