9923566 has 4 divisors (see below), whose sum is σ = 14885352. Its totient is φ = 4961782.

The previous prime is 9923531. The next prime is 9923579. The reversal of 9923566 is 6653299.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2480890 + ... + 2480893.

It is an arithmetic number, because the mean of its divisors is an integer number (3721338).

Almost surely, 2^9923566 is an apocalyptic number.

9923566 is a deficient number, since it is larger than the sum of its proper divisors (4961786).

9923566 is a wasteful number, since it uses less digits than its factorization.

9923566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961785.

The product of its digits is 87480, while the sum is 40.

The square root of 9923566 is about 3150.1692018049. The cubic root of 9923566 is about 214.8931576590.

The spelling of 9923566 in words is "nine million, nine hundred twenty-three thousand, five hundred sixty-six".