8663406 has 16 divisors (see below), whose sum is σ = 17403984. Its totient is φ = 2874944.

The previous prime is 8663401. The next prime is 8663437. The reversal of 8663406 is 6043668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663401) 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, 1701 + ... + 4496.

It is an arithmetic number, because the mean of its divisors is an integer number (1087749).

Almost surely, 2^8663406 is an apocalyptic number.

8663406 is an abundant number, since it is smaller than the sum of its proper divisors (8740578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8663406 is a wasteful number, since it uses less digits than its factorization.

8663406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 8663406 is about 2943.3664399799. The cubic root of 8663406 is about 205.3822414231.

The spelling of 8663406 in words is "eight million, six hundred sixty-three thousand, four hundred six".