622381 has 4 divisors (see below), whose sum is σ = 627264. Its totient is φ = 617500.

The previous prime is 622367. The next prime is 622397. The reversal of 622381 is 183226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 622381 - 2⁹ = 621869 is a prime.

It is a super-2 number, since 2×622381² = 774716218322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2245 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (156816).

2⁶²²³⁸¹ is an apocalyptic number.

It is an amenable number.

622381 is a deficient number, since it is larger than the sum of its proper divisors (4883).

622381 is a wasteful number, since it uses less digits than its factorization.

622381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882.

The product of its digits is 576, while the sum is 22.

The square root of 622381 is about 788.9112751127. The cubic root of 622381 is about 85.3792054118.

The spelling of 622381 in words is "six hundred twenty-two thousand, three hundred eighty-one".