622612 has 6 divisors (see below), whose sum is σ = 1089578. Its totient is φ = 311304.

The previous prime is 622607. The next prime is 622613. The reversal of 622612 is 216226.

It can be written as a sum of positive squares in only one way, i.e., 571536 + 51076 = 756^2 + 226^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 622612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77823 + ... + 77830.

2⁶²²⁶¹² is an apocalyptic number.

It is an amenable number.

622612 is a deficient number, since it is larger than the sum of its proper divisors (466966).

622612 is a wasteful number, since it uses less digits than its factorization.

622612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155657 (or 155655 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 622612 is about 789.0576658268. The cubic root of 622612 is about 85.3897670865.

Adding to 622612 its reverse (216226), we get a palindrome (838838).

The spelling of 622612 in words is "six hundred twenty-two thousand, six hundred twelve".