506621679 has 16 divisors (see below), whose sum is σ = 685649664. Its totient is φ = 332683200.

The previous prime is 506621659. The next prime is 506621683. The reversal of 506621679 is 976126605.

It is a de Polignac number, because none of the positive numbers 2^k-506621679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 506621679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506621659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330144 + ... + 331674.

It is an arithmetic number, because the mean of its divisors is an integer number (42853104).

Almost surely, 2^506621679 is an apocalyptic number.

506621679 is a deficient number, since it is larger than the sum of its proper divisors (179027985).

506621679 is a wasteful number, since it uses less digits than its factorization.

506621679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 506621679 is about 22508.2580178920. The cubic root of 506621679 is about 797.1889250373.

The spelling of 506621679 in words is "five hundred six million, six hundred twenty-one thousand, six hundred seventy-nine".