6620536466 has 48 divisors (see below), whose sum is σ = 10550247192. Its totient is φ = 3113280000.

The previous prime is 6620536451. The next prime is 6620536523. The reversal of 6620536466 is 6646350266.

It can be written as a sum of positive squares in 4 ways, for example, as 5259295441 + 1361241025 = 72521^2 + 36895^2 .

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16509866 + ... + 16510266.

Almost surely, 2^6620536466 is an apocalyptic number.

6620536466 is a deficient number, since it is larger than the sum of its proper divisors (3929710726).

6620536466 is a wasteful number, since it uses less digits than its factorization.

6620536466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The square root of 6620536466 is about 81366.6790891702. The cubic root of 6620536466 is about 1877.7209884069.

The spelling of 6620536466 in words is "six billion, six hundred twenty million, five hundred thirty-six thousand, four hundred sixty-six".