626544420 has 96 divisors (see below), whose sum is σ = 1844881920. Its totient is φ = 158645760.

The previous prime is 626544419. The next prime is 626544427. The reversal of 626544420 is 24445626.

It is not an unprimeable number, because it can be changed into a prime (626544427) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 103189 + ... + 109091.

It is an arithmetic number, because the mean of its divisors is an integer number (19217520).

Almost surely, 2^626544420 is an apocalyptic number.

626544420 is a gapful number since it is divisible by the number (60) 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 626544420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922440960).

626544420 is an abundant number, since it is smaller than the sum of its proper divisors (1218337500).

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

626544420 is a wasteful number, since it uses less digits than its factorization.

626544420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005 (or 6003 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 626544420 is about 25030.8693416749. The cubic root of 626544420 is about 855.6916396666.

The spelling of 626544420 in words is "six hundred twenty-six million, five hundred forty-four thousand, four hundred twenty".