622351643 has 4 divisors (see below), whose sum is σ = 622619160. Its totient is φ = 622084128.

The previous prime is 622351603. The next prime is 622351663. The reversal of 622351643 is 346153226.

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

It is a cyclic number.

It is not a de Polignac number, because 622351643 - 2⁶ = 622351579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622351603) 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, 130238 + ... + 134931.

It is an arithmetic number, because the mean of its divisors is an integer number (155654790).

Almost surely, 2^622351643 is an apocalyptic number.

622351643 is a deficient number, since it is larger than the sum of its proper divisors (267517).

622351643 is a wasteful number, since it uses less digits than its factorization.

622351643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267516.

The product of its digits is 25920, while the sum is 32.

The square root of 622351643 is about 24946.9766304456. The cubic root of 622351643 is about 853.7786297758.

The spelling of 622351643 in words is "six hundred twenty-two million, three hundred fifty-one thousand, six hundred forty-three".