6609438100 has 36 divisors (see below), whose sum is σ = 14430506944. Its totient is φ = 2627549280.

The previous prime is 6609438091. The next prime is 6609438113. The reversal of 6609438100 is 18349066.

It is a super-2 number, since 2×6609438100² = 87369343995463220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6609438100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186444 + ... + 219043.

Almost surely, 2^6609438100 is an apocalyptic number.

It is an amenable number.

6609438100 is an abundant number, since it is smaller than the sum of its proper divisors (7821068844).

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

6609438100 is a wasteful number, since it uses less digits than its factorization.

6609438100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405664 (or 405657 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 6609438100 is about 81298.4507847474. The cubic root of 6609438100 is about 1876.6711595594.

The spelling of 6609438100 in words is "six billion, six hundred nine million, four hundred thirty-eight thousand, one hundred".