478782757 has 2 divisors, whose sum is σ = 478782758. Its totient is φ = 478782756.

The previous prime is 478782727. The next prime is 478782793. The reversal of 478782757 is 757287874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435932641 + 42850116 = 20879^2 + 6546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478782757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478782698 and 478782707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478782727) 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, 239391378 + 239391379.

It is an arithmetic number, because the mean of its divisors is an integer number (239391379).

Almost surely, 2^478782757 is an apocalyptic number.

It is an amenable number.

478782757 is a deficient number, since it is larger than the sum of its proper divisors (1).

478782757 is an equidigital number, since it uses as much as digits as its factorization.

478782757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6146560, while the sum is 55.

The square root of 478782757 is about 21881.1050223703. The cubic root of 478782757 is about 782.3111144699.

The spelling of 478782757 in words is "four hundred seventy-eight million, seven hundred eighty-two thousand, seven hundred fifty-seven".