9917623 has 8 divisors (see below), whose sum is σ = 10706400. Its totient is φ = 9158688.

The previous prime is 9917603. The next prime is 9917627. The reversal of 9917623 is 3267199.

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

It is a cyclic number.

It is not a de Polignac number, because 9917623 - 2¹⁷ = 9786551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917627) 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, 6768 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (1338300).

Almost surely, 2^9917623 is an apocalyptic number.

9917623 is a deficient number, since it is larger than the sum of its proper divisors (788777).

9917623 is a wasteful number, since it uses less digits than its factorization.

9917623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14921.

The product of its digits is 20412, while the sum is 37.

The square root of 9917623 is about 3149.2257778699. The cubic root of 9917623 is about 214.8502508697.

It can be divided in two parts, 99176 and 23, that added together give a palindrome (99199).

The spelling of 9917623 in words is "nine million, nine hundred seventeen thousand, six hundred twenty-three".