622290 has 16 divisors (see below), whose sum is σ = 1493568. Its totient is φ = 165936.

The previous prime is 622277. The next prime is 622301. The reversal of 622290 is 92226.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10342 + ... + 10401.

It is an arithmetic number, because the mean of its divisors is an integer number (93348).

2⁶²²²⁹⁰ is an apocalyptic number.

622290 is an abundant number, since it is smaller than the sum of its proper divisors (871278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622290 is a wasteful number, since it uses less digits than its factorization.

622290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20753.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 622290 is about 788.8535985847. The cubic root of 622290 is about 85.3750440346.

The spelling of 622290 in words is "six hundred twenty-two thousand, two hundred ninety".