6550668458 has 4 divisors (see below), whose sum is σ = 9826002690. Its totient is φ = 3275334228.

The previous prime is 6550668413. The next prime is 6550668491. The reversal of 6550668458 is 8548660556.

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

It can be written as a sum of positive squares in only one way, i.e., 5015047489 + 1535620969 = 70817^2 + 39187^2 .

It is a super-2 number, since 2×6550668458² = 85822514493272195528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1637667113 + ... + 1637667116.

Almost surely, 2^6550668458 is an apocalyptic number.

6550668458 is a deficient number, since it is larger than the sum of its proper divisors (3275334232).

6550668458 is a wasteful number, since it uses less digits than its factorization.

6550668458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275334231.

The product of its (nonzero) digits is 6912000, while the sum is 53.

The square root of 6550668458 is about 80936.1999231493. The cubic root of 6550668458 is about 1871.0922782621.

The spelling of 6550668458 in words is "six billion, five hundred fifty million, six hundred sixty-eight thousand, four hundred fifty-eight".