622642 has 8 divisors (see below), whose sum is σ = 988956. Its totient is φ = 292992.

The previous prime is 622639. The next prime is 622663. The reversal of 622642 is 246226.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 622521 + 121 = 789^2 + 11^2 .

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

It is a d-powerful number, because it can be written as 6 + 2³ + 6² + 2¹⁵ + 4⁸ + 2¹⁹ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9123 + ... + 9190.

2⁶²²⁶⁴² is an apocalyptic number.

622642 is a deficient number, since it is larger than the sum of its proper divisors (366314).

622642 is a wasteful number, since it uses less digits than its factorization.

622642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18332.

The product of its digits is 1152, while the sum is 22.

The square root of 622642 is about 789.0766756152. The cubic root of 622642 is about 85.3911385409.

Adding to 622642 its reverse (246226), we get a palindrome (868868).

It can be divided in two parts, 62 and 2642, that added together give a square (2704 = 52²).

The spelling of 622642 in words is "six hundred twenty-two thousand, six hundred forty-two".