620404122 has 16 divisors (see below), whose sum is σ = 1336255200. Its totient is φ = 190893552.

The previous prime is 620404091. The next prime is 620404159. The reversal of 620404122 is 221404026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3976872 + ... + 3977027.

It is an arithmetic number, because the mean of its divisors is an integer number (83515950).

Almost surely, 2^620404122 is an apocalyptic number.

620404122 is an abundant number, since it is smaller than the sum of its proper divisors (715851078).

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

620404122 is a wasteful number, since it uses less digits than its factorization.

620404122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953917.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 620404122 is about 24907.9128390959. The cubic root of 620404122 is about 852.8871245397.

Adding to 620404122 its reverse (221404026), we get a palindrome (841808148).

The spelling of 620404122 in words is "six hundred twenty million, four hundred four thousand, one hundred twenty-two".