442626666 has 8 divisors (see below), whose sum is σ = 885253344. Its totient is φ = 147542220.

The previous prime is 442626661. The next prime is 442626677. The reversal of 442626666 is 666626244.

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

442626666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (442626661) 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, 36885550 + ... + 36885561.

It is an arithmetic number, because the mean of its divisors is an integer number (110656668).

Almost surely, 2^442626666 is an apocalyptic number.

442626666 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.

442626666 is a wasteful number, since it uses less digits than its factorization.

442626666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73771116.

The product of its digits is 497664, while the sum is 42.

The square root of 442626666 is about 21038.6944937180. The cubic root of 442626666 is about 762.1009882618.

The spelling of 442626666 in words is "four hundred forty-two million, six hundred twenty-six thousand, six hundred sixty-six".