506779720 has 16 divisors (see below), whose sum is σ = 1140254460. Its totient is φ = 202711872.

The previous prime is 506779717. The next prime is 506779739. The reversal of 506779720 is 27977605.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 461648196 + 45131524 = 21486^2 + 6718^2 .

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 3 ways as a sum of consecutive naturals, for example, 6334707 + ... + 6334786.

Almost surely, 2^506779720 is an apocalyptic number.

It is an amenable number.

506779720 is an abundant number, since it is smaller than the sum of its proper divisors (633474740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

506779720 is a wasteful number, since it uses less digits than its factorization.

506779720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12669504 (or 12669500 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 506779720 is about 22511.7684778429. The cubic root of 506779720 is about 797.2718109735.

The spelling of 506779720 in words is "five hundred six million, seven hundred seventy-nine thousand, seven hundred twenty".