421768866 has 32 divisors (see below), whose sum is σ = 875966400. Its totient is φ = 135222080.

The previous prime is 421768849. The next prime is 421768873. The reversal of 421768866 is 668867124.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42301 + ... + 51311.

It is an arithmetic number, because the mean of its divisors is an integer number (27373950).

Almost surely, 2^421768866 is an apocalyptic number.

421768866 is an abundant number, since it is smaller than the sum of its proper divisors (454197534).

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

421768866 is a wasteful number, since it uses less digits than its factorization.

421768866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314.

The product of its digits is 774144, while the sum is 48.

The square root of 421768866 is about 20537.0121001084. The cubic root of 421768866 is about 749.9371005028.

The spelling of 421768866 in words is "four hundred twenty-one million, seven hundred sixty-eight thousand, eight hundred sixty-six".