478816757 has 2 divisors, whose sum is σ = 478816758. Its totient is φ = 478816756.

The previous prime is 478816753. The next prime is 478816759. The reversal of 478816757 is 757618874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473758756 + 5058001 = 21766^2 + 2249^2 .

It is a cyclic number.

It is not a de Polignac number, because 478816757 - 2² = 478816753 is a prime.

Together with 478816759, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 478816699 and 478816708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478816753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239408378 + 239408379.

It is an arithmetic number, because the mean of its divisors is an integer number (239408379).

Almost surely, 2^478816757 is an apocalyptic number.

It is an amenable number.

478816757 is a deficient number, since it is larger than the sum of its proper divisors (1).

478816757 is an equidigital number, since it uses as much as digits as its factorization.

478816757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2634240, while the sum is 53.

The square root of 478816757 is about 21881.8819346052. The cubic root of 478816757 is about 782.3296322270.

The spelling of 478816757 in words is "four hundred seventy-eight million, eight hundred sixteen thousand, seven hundred fifty-seven".