622644063641 has 4 divisors (see below), whose sum is σ = 628154188212. Its totient is φ = 617133939072.

The previous prime is 622644063607. The next prime is 622644063649. The reversal of 622644063641 is 146360446226.

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 72716515600 + 549927548041 = 269660^2 + 741571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622644063641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 622644063592 and 622644063601.

It is not an unprimeable number, because it can be changed into a prime (622644063649) 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, 2755062116 + ... + 2755062341.

It is an arithmetic number, because the mean of its divisors is an integer number (157038547053).

Almost surely, 2^622644063641 is an apocalyptic number.

It is an amenable number.

622644063641 is a deficient number, since it is larger than the sum of its proper divisors (5510124571).

622644063641 is a wasteful number, since it uses less digits than its factorization.

622644063641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510124570.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 622644063641 in words is "six hundred twenty-two billion, six hundred forty-four million, sixty-three thousand, six hundred forty-one".