68799449 has 2 divisors, whose sum is σ = 68799450. Its totient is φ = 68799448.

The previous prime is 68799433. The next prime is 68799469. The reversal of 68799449 is 94499786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68773849 + 25600 = 8293^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 68799449 - 2⁴ = 68799433 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68799394 and 68799403.

It is not a weakly prime, because it can be changed into another prime (68799469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34399724 + 34399725.

It is an arithmetic number, because the mean of its divisors is an integer number (34399725).

Almost surely, 2^68799449 is an apocalyptic number.

It is an amenable number.

68799449 is a deficient number, since it is larger than the sum of its proper divisors (1).

68799449 is an equidigital number, since it uses as much as digits as its factorization.

68799449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 68799449 is about 8294.5433267902. The cubic root of 68799449 is about 409.7588290164.

The spelling of 68799449 in words is "sixty-eight million, seven hundred ninety-nine thousand, four hundred forty-nine".