446666663 has 4 divisors (see below), whose sum is σ = 447441360. Its totient is φ = 445891968.

The previous prime is 446666659. The next prime is 446666713. The reversal of 446666663 is 366666644.

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 446666663 - 2² = 446666659 is a prime.

It is a super-2 number, since 2×446666663² = 399022215671111138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446666263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386483 + ... + 387636.

It is an arithmetic number, because the mean of its divisors is an integer number (111860340).

Almost surely, 2^446666663 is an apocalyptic number.

446666663 is a deficient number, since it is larger than the sum of its proper divisors (774697).

446666663 is an equidigital number, since it uses as much as digits as its factorization.

446666663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774696.

The product of its digits is 2239488, while the sum is 47.

The square root of 446666663 is about 21134.4898921171. The cubic root of 446666663 is about 764.4126170189.

The spelling of 446666663 in words is "four hundred forty-six million, six hundred sixty-six thousand, six hundred sixty-three".