6566639010 has 32 divisors (see below), whose sum is σ = 16185880512. Its totient is φ = 1703776320.

The previous prime is 6566638999. The next prime is 6566639033. The reversal of 6566639010 is 109366656.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2956836 + ... + 2959055.

It is an arithmetic number, because the mean of its divisors is an integer number (505808766).

Almost surely, 2^6566639010 is an apocalyptic number.

6566639010 is an abundant number, since it is smaller than the sum of its proper divisors (9619241502).

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

6566639010 is a wasteful number, since it uses less digits than its factorization.

6566639010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5915938.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 6566639010 is about 81034.8012276207. The cubic root of 6566639010 is about 1872.6116206575.

The spelling of 6566639010 in words is "six billion, five hundred sixty-six million, six hundred thirty-nine thousand, ten".