8663478 has 8 divisors (see below), whose sum is σ = 17326968. Its totient is φ = 2887824.

The previous prime is 8663471. The next prime is 8663497. The reversal of 8663478 is 8743668.

It is a sphenic number, since it is the product of 3 distinct primes.

8663478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663471) 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, 721951 + ... + 721962.

It is an arithmetic number, because the mean of its divisors is an integer number (2165871).

Almost surely, 2^8663478 is an apocalyptic number.

8663478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8663478 is a wasteful number, since it uses less digits than its factorization.

8663478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443918.

The product of its digits is 193536, while the sum is 42.

The square root of 8663478 is about 2943.3786708475. The cubic root of 8663478 is about 205.3828103864.

The spelling of 8663478 in words is "eight million, six hundred sixty-three thousand, four hundred seventy-eight".