6458678669 has 2 divisors, whose sum is σ = 6458678670. Its totient is φ = 6458678668.

The previous prime is 6458678657. The next prime is 6458678701. The reversal of 6458678669 is 9668768546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6437976169 + 20702500 = 80237^2 + 4550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6458678669 is a prime.

It is a super-2 number, since 2×6458678669² = 83429060298791223122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6458678069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229339334 + 3229339335.

It is an arithmetic number, because the mean of its divisors is an integer number (3229339335).

Almost surely, 2^6458678669 is an apocalyptic number.

It is an amenable number.

6458678669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6458678669 is an equidigital number, since it uses as much as digits as its factorization.

6458678669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 65.

The square root of 6458678669 is about 80365.9048913157. The cubic root of 6458678669 is about 1862.2924934593.

The spelling of 6458678669 in words is "six billion, four hundred fifty-eight million, six hundred seventy-eight thousand, six hundred sixty-nine".