622198 has 4 divisors (see below), whose sum is σ = 933300. Its totient is φ = 311098.

The previous prime is 622189. The next prime is 622241. The reversal of 622198 is 891226.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 155548 + ... + 155551.

It is an arithmetic number, because the mean of its divisors is an integer number (233325).

2⁶²²¹⁹⁸ is an apocalyptic number.

622198 is a deficient number, since it is larger than the sum of its proper divisors (311102).

622198 is a wasteful number, since it uses less digits than its factorization.

622198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311101.

The product of its digits is 1728, while the sum is 28.

The square root of 622198 is about 788.7952839616. The cubic root of 622198 is about 85.3708365155.

Adding to 622198 its sum of digits (28), we get a palindrome (622226).

Subtracting from 622198 its sum of digits (28), we obtain a triangular number (622170 = T₁₁₁₅).

It can be divided in two parts, 622 and 198, that added together give a triangular number (820 = T₄₀).

The spelling of 622198 in words is "six hundred twenty-two thousand, one hundred ninety-eight".