6625782644 has 48 divisors (see below), whose sum is σ = 13034972160. Its totient is φ = 2926091520.

The previous prime is 6625782643. The next prime is 6625782701. The reversal of 6625782644 is 4462875266.

It is a junction number, because it is equal to n+sod(n) for n = 6625782592 and 6625782601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625782643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120377 + ... + 166559.

It is an arithmetic number, because the mean of its divisors is an integer number (271561920).

Almost surely, 2^6625782644 is an apocalyptic number.

It is an amenable number.

6625782644 is a deficient number, since it is larger than the sum of its proper divisors (6409189516).

6625782644 is a wasteful number, since it uses less digits than its factorization.

6625782644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46320 (or 46318 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 50.

The square root of 6625782644 is about 81398.9105823905. The cubic root of 6625782644 is about 1878.2168322992.

The spelling of 6625782644 in words is "six billion, six hundred twenty-five million, seven hundred eighty-two thousand, six hundred forty-four".