8663623 has 4 divisors (see below), whose sum is σ = 8768088. Its totient is φ = 8559160.

The previous prime is 8663621. The next prime is 8663653. The reversal of 8663623 is 3263668.

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 8663623 - 2¹ = 8663621 is a prime.

It is a super-2 number, since 2×8663623² = 150116726972258, which contains 22 as substring.

It is a Duffinian number.

8663623 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52108 + ... + 52273.

It is an arithmetic number, because the mean of its divisors is an integer number (2192022).

Almost surely, 2^8663623 is an apocalyptic number.

8663623 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

8663623 is a deficient number, since it is larger than the sum of its proper divisors (104465).

8663623 is a wasteful number, since it uses less digits than its factorization.

8663623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104464.

The product of its digits is 31104, while the sum is 34.

The square root of 8663623 is about 2943.4033023016. The cubic root of 8663623 is about 205.3839562058.

It can be divided in two parts, 866 and 3623, that added together give a square (4489 = 67²).

The spelling of 8663623 in words is "eight million, six hundred sixty-three thousand, six hundred twenty-three".