9996531 has 8 divisors (see below), whose sum is σ = 13370304. Its totient is φ = 6643560.

The previous prime is 9996523. The next prime is 9996541. The reversal of 9996531 is 1356999.

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

It is not a de Polignac number, because 9996531 - 2³ = 9996523 is a prime.

It is a super-2 number, since 2×9996531² = 199861264067922, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9996541) 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 7 ways as a sum of consecutive naturals, for example, 4041 + ... + 6026.

It is an arithmetic number, because the mean of its divisors is an integer number (1671288).

Almost surely, 2^9996531 is an apocalyptic number.

9996531 is a deficient number, since it is larger than the sum of its proper divisors (3373773).

9996531 is a wasteful number, since it uses less digits than its factorization.

9996531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401.

The product of its digits is 65610, while the sum is 42.

The square root of 9996531 is about 3161.7291155316. The cubic root of 9996531 is about 215.4185536755.

The spelling of 9996531 in words is "nine million, nine hundred ninety-six thousand, five hundred thirty-one".