6600997100 has 36 divisors (see below), whose sum is σ = 15078071400. Its totient is φ = 2501429760.

The previous prime is 6600997061. The next prime is 6600997103. The reversal of 6600997100 is 17990066.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (6600997103) 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 11 ways as a sum of consecutive naturals, for example, 1735205 + ... + 1739004.

Almost surely, 2^6600997100 is an apocalyptic number.

It is an amenable number.

6600997100 is an abundant number, since it is smaller than the sum of its proper divisors (8477074300).

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

6600997100 is a wasteful number, since it uses less digits than its factorization.

6600997100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474242 (or 3474235 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 6600997100 is about 81246.5205408822. The cubic root of 6600997100 is about 1875.8719121104.

The spelling of 6600997100 in words is "six billion, six hundred million, nine hundred ninety-seven thousand, one hundred".