478320755 has 16 divisors (see below), whose sum is σ = 662999904. Its totient is φ = 327406080.

The previous prime is 478320743. The next prime is 478320767. The reversal of 478320755 is 557023874.

It is an interprime number because it is at equal distance from previous prime (478320743) and next prime (478320767).

It is not a de Polignac number, because 478320755 - 2¹⁴ = 478304371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 254852 + ... + 256721.

It is an arithmetic number, because the mean of its divisors is an integer number (41437494).

Almost surely, 2^478320755 is an apocalyptic number.

478320755 is a deficient number, since it is larger than the sum of its proper divisors (184679149).

478320755 is a wasteful number, since it uses less digits than its factorization.

478320755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511606.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 478320755 is about 21870.5453750015. The cubic root of 478320755 is about 782.0594028043.

The spelling of 478320755 in words is "four hundred seventy-eight million, three hundred twenty thousand, seven hundred fifty-five".