621107226 has 72 divisors (see below), whose sum is σ = 1483428960. Its totient is φ = 186943680.

The previous prime is 621107213. The next prime is 621107231. The reversal of 621107226 is 622701126.

621107226 is a `hidden beast` number, since 621 + 10 + 7 + 2 + 26 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 621107226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2210206 + ... + 2210486.

It is an arithmetic number, because the mean of its divisors is an integer number (20603180).

Almost surely, 2^621107226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621107226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741714480).

621107226 is an abundant number, since it is smaller than the sum of its proper divisors (862321734).

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

621107226 is a wasteful number, since it uses less digits than its factorization.

621107226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 621107226 is about 24922.0229114733. The cubic root of 621107226 is about 853.2091952327.

The spelling of 621107226 in words is "six hundred twenty-one million, one hundred seven thousand, two hundred twenty-six".