8641966 has 8 divisors (see below), whose sum is σ = 13182840. Its totient is φ = 4247688.

The previous prime is 8641957. The next prime is 8641987. The reversal of 8641966 is 6691468.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36501 + ... + 36736.

It is an arithmetic number, because the mean of its divisors is an integer number (1647855).

Almost surely, 2^8641966 is an apocalyptic number.

8641966 is a deficient number, since it is larger than the sum of its proper divisors (4540874).

8641966 is a wasteful number, since it uses less digits than its factorization.

8641966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73298.

The product of its digits is 62208, while the sum is 40.

The square root of 8641966 is about 2939.7220957090. The cubic root of 8641966 is about 205.2126763686.

Subtracting from 8641966 its product of digits (62208), we obtain a palindrome (8579758).

The spelling of 8641966 in words is "eight million, six hundred forty-one thousand, nine hundred sixty-six".