8919663 has 4 divisors (see below), whose sum is σ = 11892888. Its totient is φ = 5946440.

The previous prime is 8919649. The next prime is 8919671. The reversal of 8919663 is 3669198.

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

It is a cyclic number.

It is not a de Polignac number, because 8919663 - 2¹⁰ = 8918639 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8919623) 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 3 ways as a sum of consecutive naturals, for example, 1486608 + ... + 1486613.

It is an arithmetic number, because the mean of its divisors is an integer number (2973222).

Almost surely, 2^8919663 is an apocalyptic number.

8919663 is a deficient number, since it is larger than the sum of its proper divisors (2973225).

8919663 is a wasteful number, since it uses less digits than its factorization.

8919663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973224.

The product of its digits is 69984, while the sum is 42.

The square root of 8919663 is about 2986.5804861078. The cubic root of 8919663 is about 207.3876141783.

The spelling of 8919663 in words is "eight million, nine hundred nineteen thousand, six hundred sixty-three".