6649165810 has 32 divisors (see below), whose sum is σ = 13682264832. Its totient is φ = 2279050560.

The previous prime is 6649165807. The next prime is 6649165819. The reversal of 6649165810 is 185619466.

It is a super-2 number, since 2×6649165810² = 88422811937745912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6649165819) 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 15 ways as a sum of consecutive naturals, for example, 269659 + ... + 293281.

It is an arithmetic number, because the mean of its divisors is an integer number (427570776).

Almost surely, 2^6649165810 is an apocalyptic number.

6649165810 is an abundant number, since it is smaller than the sum of its proper divisors (7033099022).

6649165810 is a wasteful number, since it uses less digits than its factorization.

6649165810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27658.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 6649165810 is about 81542.4172440332. The cubic root of 6649165810 is about 1880.4237208882.

The spelling of 6649165810 in words is "six billion, six hundred forty-nine million, one hundred sixty-five thousand, eight hundred ten".