626745856 has 80 divisors (see below), whose sum is σ = 1438256160. Its totient is φ = 269844480.

The previous prime is 626745853. The next prime is 626745877. The reversal of 626745856 is 658547626.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626745853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104080 + ... + 109936.

It is an arithmetic number, because the mean of its divisors is an integer number (17978202).

Almost surely, 2^626745856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626745856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719128080).

626745856 is an abundant number, since it is smaller than the sum of its proper divisors (811510304).

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

626745856 is a wasteful number, since it uses less digits than its factorization.

626745856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905 (or 5889 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The square root of 626745856 is about 25034.8927698922. The cubic root of 626745856 is about 855.7833323579.

The spelling of 626745856 in words is "six hundred twenty-six million, seven hundred forty-five thousand, eight hundred fifty-six".