622666 has 24 divisors (see below), whose sum is σ = 1072512. Its totient is φ = 270600.

The previous prime is 622663. The next prime is 622669. The reversal of 622666 is 666226.

It is an interprime number because it is at equal distance from previous prime (622663) and next prime (622669).

622666 is a modest number, since divided by 666 gives 622 as remainder.

It is not an unprimeable number, because it can be changed into a prime (622663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7461 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (44688).

2⁶²²⁶⁶⁶ is an apocalyptic number.

622666 is a deficient number, since it is larger than the sum of its proper divisors (449846).

622666 is a wasteful number, since it uses less digits than its factorization.

622666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 127 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 622666 is about 789.0918831163. The cubic root of 622666 is about 85.3922356727.

The spelling of 622666 in words is "six hundred twenty-two thousand, six hundred sixty-six".