8145663 has 4 divisors (see below), whose sum is σ = 10860888. Its totient is φ = 5430440.

The previous prime is 8145649. The next prime is 8145671. The reversal of 8145663 is 3665418.

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 8145663 - 2⁴ = 8145647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145673) 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, 1357608 + ... + 1357613.

It is an arithmetic number, because the mean of its divisors is an integer number (2715222).

Almost surely, 2^8145663 is an apocalyptic number.

8145663 is a deficient number, since it is larger than the sum of its proper divisors (2715225).

8145663 is a wasteful number, since it uses less digits than its factorization.

8145663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715224.

The product of its digits is 17280, while the sum is 33.

The square root of 8145663 is about 2854.0607912236. The cubic root of 8145663 is about 201.2065647038.

The spelling of 8145663 in words is "eight million, one hundred forty-five thousand, six hundred sixty-three".