622406879440 has 40 divisors (see below), whose sum is σ = 1447151662080. Its totient is φ = 248953174656.

The previous prime is 622406879389. The next prime is 622406879441. The reversal of 622406879440 is 44978604226.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622406879441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2165457 + ... + 2435983.

It is an arithmetic number, because the mean of its divisors is an integer number (36178791552).

Almost surely, 2^622406879440 is an apocalyptic number.

It is an amenable number.

622406879440 is an abundant number, since it is smaller than the sum of its proper divisors (824744782640).

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

622406879440 is a wasteful number, since it uses less digits than its factorization.

622406879440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299299 (or 299293 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 52.

The spelling of 622406879440 in words is "six hundred twenty-two billion, four hundred six million, eight hundred seventy-nine thousand, four hundred forty".