666505622 has 8 divisors (see below), whose sum is σ = 1013453976. Its totient is φ = 328687632.

The previous prime is 666505607. The next prime is 666505627. The reversal of 666505622 is 226505666.

666505622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666505627) 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, 2282408 + ... + 2282699.

It is an arithmetic number, because the mean of its divisors is an integer number (126681747).

Almost surely, 2^666505622 is an apocalyptic number.

666505622 is a deficient number, since it is larger than the sum of its proper divisors (346948354).

666505622 is a wasteful number, since it uses less digits than its factorization.

666505622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565182.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 666505622 is about 25816.7701697947. The cubic root of 666505622 is about 873.5101163340.

The spelling of 666505622 in words is "six hundred sixty-six million, five hundred five thousand, six hundred twenty-two".