622645645521306 has 64 divisors (see below), whose sum is σ = 1369351644512256. Its totient is φ = 187173605707200.

The previous prime is 622645645521281. The next prime is 622645645521307. The reversal of 622645645521306 is 603125546546226.

622645645521306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (622645645521307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69815596 + ... + 78227288.

It is an arithmetic number, because the mean of its divisors is an integer number (21396119445504).

Almost surely, 2^{622645645521306} is an apocalyptic number.

622645645521306 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 622645645521306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684675822256128).

622645645521306 is an abundant number, since it is smaller than the sum of its proper divisors (746705998990950).

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

622645645521306 is a wasteful number, since it uses less digits than its factorization.

622645645521306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8420667.

The product of its (nonzero) digits is 62208000, while the sum is 57.

The spelling of 622645645521306 in words is "six hundred twenty-two trillion, six hundred forty-five billion, six hundred forty-five million, five hundred twenty-one thousand, three hundred six".