622172 has 12 divisors (see below), whose sum is σ = 1099560. Its totient is φ = 308016.

The previous prime is 622159. The next prime is 622177. The reversal of 622172 is 271226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622177) by changing a digit.

622172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (91630).

2⁶²²¹⁷² is an apocalyptic number.

It is an amenable number.

622172 is a deficient number, since it is larger than the sum of its proper divisors (477388).

622172 is a wasteful number, since it uses less digits than its factorization.

622172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1538 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 622172 is about 788.7788029606. The cubic root of 622172 is about 85.3696473589.

Adding to 622172 its reverse (271226), we get a palindrome (893398).

The spelling of 622172 in words is "six hundred twenty-two thousand, one hundred seventy-two".