506985787 has 16 divisors (see below), whose sum is σ = 647506944. Its totient is φ = 385416000.

The previous prime is 506985779. The next prime is 506985793. The reversal of 506985787 is 787589605.

It is a cyclic number.

It is not a de Polignac number, because 506985787 - 2³ = 506985779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506985737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77139 + ... + 83452.

It is an arithmetic number, because the mean of its divisors is an integer number (40469184).

Almost surely, 2^506985787 is an apocalyptic number.

506985787 is a deficient number, since it is larger than the sum of its proper divisors (140521157).

506985787 is a wasteful number, since it uses less digits than its factorization.

506985787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160650.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The square root of 506985787 is about 22516.3448854382. The cubic root of 506985787 is about 797.3798586720.

The spelling of 506985787 in words is "five hundred six million, nine hundred eighty-five thousand, seven hundred eighty-seven".