6649197084 has 18 divisors (see below), whose sum is σ = 16807692720. Its totient is φ = 2216399016.

The previous prime is 6649197083. The next prime is 6649197089. The reversal of 6649197084 is 4807919466.

6649197084 is a `hidden beast` number, since 6 + 6 + 491 + 9 + 70 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 6649197084.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649197083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92349924 + ... + 92349995.

Almost surely, 2^6649197084 is an apocalyptic number.

It is an amenable number.

6649197084 is an abundant number, since it is smaller than the sum of its proper divisors (10158495636).

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

6649197084 is a wasteful number, since it uses less digits than its factorization.

6649197084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184699929 (or 184699924 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 6649197084 is about 81542.6090090328. The cubic root of 6649197084 is about 1880.4266690414.

The spelling of 6649197084 in words is "six billion, six hundred forty-nine million, one hundred ninety-seven thousand, eighty-four".