6657379625 has 64 divisors (see below), whose sum is σ = 9281405952. Its totient is φ = 4736160000.

The previous prime is 6657379621. The next prime is 6657379667. The reversal of 6657379625 is 5269737566.

It is not a de Polignac number, because 6657379625 - 2² = 6657379621 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6657379621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5116475 + ... + 5117775.

It is an arithmetic number, because the mean of its divisors is an integer number (145021968).

Almost surely, 2^6657379625 is an apocalyptic number.

6657379625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6657379625 is a deficient number, since it is larger than the sum of its proper divisors (2624026327).

6657379625 is a wasteful number, since it uses less digits than its factorization.

6657379625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1433 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 56.

The square root of 6657379625 is about 81592.7669894826. The cubic root of 6657379625 is about 1881.1977075489.

The spelling of 6657379625 in words is "six billion, six hundred fifty-seven million, three hundred seventy-nine thousand, six hundred twenty-five".