622106561 has 8 divisors (see below), whose sum is σ = 636849600. Its totient is φ = 607503600.

The previous prime is 622106557. The next prime is 622106627. The reversal of 622106561 is 165601226.

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

It is a cyclic number.

It is not a de Polignac number, because 622106561 - 2² = 622106557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (622102561) 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 7 ways as a sum of consecutive naturals, for example, 26006 + ... + 43823.

It is an arithmetic number, because the mean of its divisors is an integer number (79606200).

Almost surely, 2^622106561 is an apocalyptic number.

It is an amenable number.

622106561 is a deficient number, since it is larger than the sum of its proper divisors (14743039).

622106561 is a wasteful number, since it uses less digits than its factorization.

622106561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70039.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 622106561 is about 24942.0640886034. The cubic root of 622106561 is about 853.6665424216. Note that the first 3 decimals are identical.

Adding to 622106561 its reverse (165601226), we get a palindrome (787707787).

The spelling of 622106561 in words is "six hundred twenty-two million, one hundred six thousand, five hundred sixty-one".