6566496898 has 16 divisors (see below), whose sum is σ = 10638908280. Its totient is φ = 3021693696.

The previous prime is 6566496889. The next prime is 6566496929. The reversal of 6566496898 is 8986946656.

It can be written as a sum of positive squares in 4 ways, for example, as 2608451329 + 3958045569 = 51073^2 + 62913^2 .

It is a super-2 number, since 2×6566496898² = 86237763022887244808, which contains 22 as substring.

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, 365953 + ... + 383476.

Almost surely, 2^6566496898 is an apocalyptic number.

6566496898 is a deficient number, since it is larger than the sum of its proper divisors (4072411382).

6566496898 is a wasteful number, since it uses less digits than its factorization.

6566496898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749781.

The product of its digits is 134369280, while the sum is 67.

The square root of 6566496898 is about 81033.9243650460. The cubic root of 6566496898 is about 1872.5981118442.

The spelling of 6566496898 in words is "six billion, five hundred sixty-six million, four hundred ninety-six thousand, eight hundred ninety-eight".