622406666 has 32 divisors (see below), whose sum is σ = 1089728640. Its totient is φ = 261084096.

The previous prime is 622406663. The next prime is 622406683. The reversal of 622406666 is 666604226.

It is not an unprimeable number, because it can be changed into a prime (622406663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434840 + ... + 436268.

It is an arithmetic number, because the mean of its divisors is an integer number (34054020).

Almost surely, 2^622406666 is an apocalyptic number.

622406666 is a deficient number, since it is larger than the sum of its proper divisors (467321974).

622406666 is a wasteful number, since it uses less digits than its factorization.

622406666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 622406666 is about 24948.0794050364. The cubic root of 622406666 is about 853.8037902981.

The spelling of 622406666 in words is "six hundred twenty-two million, four hundred six thousand, six hundred sixty-six".