6668430049 has 4 divisors (see below), whose sum is σ = 6673487040. Its totient is φ = 6663373060.

The previous prime is 6668430029. The next prime is 6668430079. The reversal of 6668430049 is 9400348666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6668430049 - 2¹¹ = 6668428001 is a prime.

It is a super-2 number, since 2×6668430049² = 88935918636812284802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6668429990 and 6668430008.

It is not an unprimeable number, because it can be changed into a prime (6668430029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526517 + ... + 2529154.

It is an arithmetic number, because the mean of its divisors is an integer number (1668371760).

Almost surely, 2^6668430049 is an apocalyptic number.

It is an amenable number.

6668430049 is a deficient number, since it is larger than the sum of its proper divisors (5056991).

6668430049 is a wasteful number, since it uses less digits than its factorization.

6668430049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056990.

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 6668430049 is about 81660.4558461438. The cubic root of 6668430049 is about 1882.2379837642.

The spelling of 6668430049 in words is "six billion, six hundred sixty-eight million, four hundred thirty thousand, forty-nine".