478306667 has 2 divisors, whose sum is σ = 478306668. Its totient is φ = 478306666.

The previous prime is 478306663. The next prime is 478306669. The reversal of 478306667 is 766603874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478306667 - 2² = 478306663 is a prime.

Together with 478306669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478306663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239153333 + 239153334.

It is an arithmetic number, because the mean of its divisors is an integer number (239153334).

Almost surely, 2^478306667 is an apocalyptic number.

478306667 is a deficient number, since it is larger than the sum of its proper divisors (1).

478306667 is an equidigital number, since it uses as much as digits as its factorization.

478306667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 478306667 is about 21870.2232956136. The cubic root of 478306667 is about 782.0517247201.

The spelling of 478306667 in words is "four hundred seventy-eight million, three hundred six thousand, six hundred sixty-seven".