622285421 has 4 divisors (see below), whose sum is σ = 625723644. Its totient is φ = 618847200.

The previous prime is 622285409. The next prime is 622285429. The reversal of 622285421 is 124582226.

622285421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 266962921 + 355322500 = 16339^2 + 18850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622285421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622285429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718840 + ... + 1719201.

It is an arithmetic number, because the mean of its divisors is an integer number (156430911).

Almost surely, 2^622285421 is an apocalyptic number.

It is an amenable number.

622285421 is a deficient number, since it is larger than the sum of its proper divisors (3438223).

622285421 is a wasteful number, since it uses less digits than its factorization.

622285421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438222.

The product of its digits is 15360, while the sum is 32.

The square root of 622285421 is about 24945.6493401154. The cubic root of 622285421 is about 853.7483462886.

The spelling of 622285421 in words is "six hundred twenty-two million, two hundred eighty-five thousand, four hundred twenty-one".