1622 has 4 divisors (see below), whose sum is σ = 2436. Its totient is φ = 810.

The previous prime is 1621. The next prime is 1627. The reversal of 1622 is 2261.

1622 is nontrivially palindromic in base 16.

1622 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

1622 is an undulating number in base 16.

1622 is a modest number, since divided by 22 gives 16 as remainder.

It is a plaindrome in base 11.

It is a nialpdrome in base 12 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404 + ... + 407.

It is an arithmetic number, because the mean of its divisors is an integer number (609).

1622 is a deficient number, since it is larger than the sum of its proper divisors (814).

1622 is an equidigital number, since it uses as much as digits as its factorization.

1622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813.

The product of its digits is 24, while the sum is 11.

The square root of 1622 is about 40.2740611312. The cubic root of 1622 is about 11.7494341058.

Adding to 1622 its reverse (2261), we get a palindrome (3883).

It can be divided in two parts, 162 and 2, that multiplied together give a square (324 = 18²).

The spelling of 1622 in words is "one thousand, six hundred twenty-two".