68004479 has 2 divisors, whose sum is σ = 68004480. Its totient is φ = 68004478.

The previous prime is 68004467. The next prime is 68004481. The reversal of 68004479 is 97440086.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68004479 - 2⁴ = 68004463 is a prime.

It is a super-2 number, since 2×68004479² = 9249218328122882, which contains 22 as substring.

Together with 68004481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68004179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34002239 + 34002240.

It is an arithmetic number, because the mean of its divisors is an integer number (34002240).

Almost surely, 2^68004479 is an apocalyptic number.

68004479 is a deficient number, since it is larger than the sum of its proper divisors (1).

68004479 is an equidigital number, since it uses as much as digits as its factorization.

68004479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 68004479 is about 8246.4828260295. The cubic root of 68004479 is about 408.1744716289.

The spelling of 68004479 in words is "sixty-eight million, four thousand, four hundred seventy-nine".