622866138 has 8 divisors (see below), whose sum is σ = 1245732288. Its totient is φ = 207622044.

The previous prime is 622866133. The next prime is 622866169. The reversal of 622866138 is 831668226.

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

622866138 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 622866138.

It is not an unprimeable number, because it can be changed into a prime (622866131) 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, 51905506 + ... + 51905517.

It is an arithmetic number, because the mean of its divisors is an integer number (155716536).

Almost surely, 2^622866138 is an apocalyptic number.

622866138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

622866138 is a wasteful number, since it uses less digits than its factorization.

622866138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103811028.

The product of its digits is 165888, while the sum is 42.

The square root of 622866138 is about 24957.2862707467. The cubic root of 622866138 is about 854.0138364849.

The spelling of 622866138 in words is "six hundred twenty-two million, eight hundred sixty-six thousand, one hundred thirty-eight".