506978 has 8 divisors (see below), whose sum is σ = 786780. Its totient is φ = 244720.

The previous prime is 506963. The next prime is 506983. The reversal of 506978 is 879605.

It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 12769 = 703^2 + 113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 506978.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4313 + ... + 4428.

2⁵⁰⁶⁹⁷⁸ is an apocalyptic number.

506978 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

506978 is a deficient number, since it is larger than the sum of its proper divisors (279802).

506978 is a wasteful number, since it uses less digits than its factorization.

506978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 506978 is about 712.0238760042. The cubic root of 506978 is about 79.7375776224.

It can be divided in two parts, 50697 and 8, that added together give a palindrome (50705).

The spelling of 506978 in words is "five hundred six thousand, nine hundred seventy-eight".