508778 has 4 divisors (see below), whose sum is σ = 763170. Its totient is φ = 254388.

The previous prime is 508771. The next prime is 508789. The reversal of 508778 is 877805.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 426409 + 82369 = 653^2 + 287^2 .

It is not an unprimeable number, because it can be changed into a prime (508771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127193 + ... + 127196.

2⁵⁰⁸⁷⁷⁸ is an apocalyptic number.

508778 is a deficient number, since it is larger than the sum of its proper divisors (254392).

508778 is a wasteful number, since it uses less digits than its factorization.

508778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254391.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 508778 is about 713.2867586041. The cubic root of 508778 is about 79.8318342512.

The spelling of 508778 in words is "five hundred eight thousand, seven hundred seventy-eight".