6503085566 has 4 divisors (see below), whose sum is σ = 9754628352. Its totient is φ = 3251542782.

The previous prime is 6503085529. The next prime is 6503085587. The reversal of 6503085566 is 6655803056.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1625771390 + ... + 1625771393.

It is an arithmetic number, because the mean of its divisors is an integer number (2438657088).

Almost surely, 2^6503085566 is an apocalyptic number.

6503085566 is a deficient number, since it is larger than the sum of its proper divisors (3251542786).

6503085566 is a wasteful number, since it uses less digits than its factorization.

6503085566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251542785.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 6503085566 is about 80641.7110805568. The cubic root of 6503085566 is about 1866.5508370659.

The spelling of 6503085566 in words is "six billion, five hundred three million, eighty-five thousand, five hundred sixty-six".