622478 has 8 divisors (see below), whose sum is σ = 982920. Its totient is φ = 294840.

The previous prime is 622477. The next prime is 622481. The reversal of 622478 is 874226.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 622478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622477) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8153 + ... + 8228.

It is an arithmetic number, because the mean of its divisors is an integer number (122865).

2⁶²²⁴⁷⁸ is an apocalyptic number.

622478 is a deficient number, since it is larger than the sum of its proper divisors (360442).

622478 is a wasteful number, since it uses less digits than its factorization.

622478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16402.

The product of its digits is 5376, while the sum is 29.

The square root of 622478 is about 788.9727498463. The cubic root of 622478 is about 85.3836407190.

The spelling of 622478 in words is "six hundred twenty-two thousand, four hundred seventy-eight".