6626665506 has 16 divisors (see below), whose sum is σ = 13254313248. Its totient is φ = 2208724800.

The previous prime is 6626665459. The next prime is 6626665517. The reversal of 6626665506 is 6055666266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69841 + ... + 134651.

It is an arithmetic number, because the mean of its divisors is an integer number (828394578).

Almost surely, 2^6626665506 is an apocalyptic number.

6626665506 is an abundant number, since it is smaller than the sum of its proper divisors (6627647742).

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

6626665506 is a wasteful number, since it uses less digits than its factorization.

6626665506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81857.

The product of its (nonzero) digits is 2332800, while the sum is 48.

The square root of 6626665506 is about 81404.3334595892. Note that the first 3 decimals coincide. The cubic root of 6626665506 is about 1878.3002505012.

The spelling of 6626665506 in words is "six billion, six hundred twenty-six million, six hundred sixty-five thousand, five hundred six".