622621734 has 48 divisors (see below), whose sum is σ = 1461913200. Its totient is φ = 176250816.

The previous prime is 622621723. The next prime is 622621781. The reversal of 622621734 is 437126226.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 622621695 and 622621704.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22332 + ... + 41760.

It is an arithmetic number, because the mean of its divisors is an integer number (30456525).

Almost surely, 2^622621734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622621734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730956600).

622621734 is an abundant number, since it is smaller than the sum of its proper divisors (839291466).

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

622621734 is a wasteful number, since it uses less digits than its factorization.

622621734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19557 (or 19550 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 622621734 is about 24952.3893445097. The cubic root of 622621734 is about 853.9021208256.

The spelling of 622621734 in words is "six hundred twenty-two million, six hundred twenty-one thousand, seven hundred thirty-four".