6600651606 has 20 divisors (see below), whose sum is σ = 14790349332. Its totient is φ = 2200217148.

The previous prime is 6600651587. The next prime is 6600651611. The reversal of 6600651606 is 6061560066.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 20372220 + ... + 20372543.

Almost surely, 2^6600651606 is an apocalyptic number.

6600651606 is an abundant number, since it is smaller than the sum of its proper divisors (8189697726).

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

6600651606 is a wasteful number, since it uses less digits than its factorization.

6600651606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40744777 (or 40744768 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6600651606 is about 81244.3943050842. The cubic root of 6600651606 is about 1875.8391840347.

The spelling of 6600651606 in words is "six billion, six hundred million, six hundred fifty-one thousand, six hundred six".