622854144 has 176 divisors, whose sum is σ = 2013265440. Its totient is φ = 188743680.

The previous prime is 622854119. The next prime is 622854157. The reversal of 622854144 is 441458226.

It is a tau number, because it is divible by the number of its divisors (176).

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (61440) is a multiple of the sum of its prime divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 622854099 and 622854108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56623099 + ... + 56623109.

Almost surely, 2^622854144 is an apocalyptic number.

622854144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622854144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006632720).

622854144 is an abundant number, since it is smaller than the sum of its proper divisors (1390411296).

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

622854144 is an frugal number, since it uses more digits than its factorization.

622854144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 16 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 622854144 is about 24957.0459790417. The cubic root of 622854144 is about 854.0083547786.

The spelling of 622854144 in words is "six hundred twenty-two million, eight hundred fifty-four thousand, one hundred forty-four".