622278 has 24 divisors (see below), whose sum is σ = 1362816. Its totient is φ = 205200.

The previous prime is 622277. The next prime is 622301. The reversal of 622278 is 872226.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3163 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (56784).

2⁶²²²⁷⁸ is an apocalyptic number.

622278 is an abundant number, since it is smaller than the sum of its proper divisors (740538).

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

622278 is a wasteful number, since it uses less digits than its factorization.

622278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 377 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 622278 is about 788.8459925740. The cubic root of 622278 is about 85.3744952513.

It can be divided in two parts, 622 and 278, that added together give a square (900 = 30²).

The spelling of 622278 in words is "six hundred twenty-two thousand, two hundred seventy-eight".