6621730475 has 12 divisors (see below), whose sum is σ = 8567944176. Its totient is φ = 5067062880.

The previous prime is 6621730471. The next prime is 6621730477. The reversal of 6621730475 is 5740371266.

It is not a de Polignac number, because 6621730475 - 2² = 6621730471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6621730471) 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 11 ways as a sum of consecutive naturals, for example, 5757452 + ... + 5758601.

It is an arithmetic number, because the mean of its divisors is an integer number (713995348).

Almost surely, 2^6621730475 is an apocalyptic number.

6621730475 is a deficient number, since it is larger than the sum of its proper divisors (1946213701).

6621730475 is a wasteful number, since it uses less digits than its factorization.

6621730475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516086 (or 11516081 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 6621730475 is about 81374.0159694727. The cubic root of 6621730475 is about 1877.8338634990.

The spelling of 6621730475 in words is "six billion, six hundred twenty-one million, seven hundred thirty thousand, four hundred seventy-five".