6506881086 has 16 divisors (see below), whose sum is σ = 13024612368. Its totient is φ = 2167152000.

The previous prime is 6506881067. The next prime is 6506881091. The reversal of 6506881086 is 6801886056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444285 + ... + 458696.

It is an arithmetic number, because the mean of its divisors is an integer number (814038273).

Almost surely, 2^6506881086 is an apocalyptic number.

6506881086 is an abundant number, since it is smaller than the sum of its proper divisors (6517731282).

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

6506881086 is a wasteful number, since it uses less digits than its factorization.

6506881086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904187.

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 6506881086 is about 80665.2408785841. The cubic root of 6506881086 is about 1866.9139033423.

The spelling of 6506881086 in words is "six billion, five hundred six million, eight hundred eighty-one thousand, eighty-six".