506740985 has 4 divisors (see below), whose sum is σ = 608089188. Its totient is φ = 405392784.

The previous prime is 506740967. The next prime is 506741021. The reversal of 506740985 is 589047605.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52070656 + 454670329 = 7216^2 + 21323^2 .

It is a cyclic number.

It is not a de Polignac number, because 506740985 - 2¹⁴ = 506724601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50674094 + ... + 50674103.

It is an arithmetic number, because the mean of its divisors is an integer number (152022297).

Almost surely, 2^506740985 is an apocalyptic number.

It is an amenable number.

506740985 is a deficient number, since it is larger than the sum of its proper divisors (101348203).

506740985 is a wasteful number, since it uses less digits than its factorization.

506740985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101348202.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 506740985 is about 22510.9081336138. The cubic root of 506740985 is about 797.2514976702.

The spelling of 506740985 in words is "five hundred six million, seven hundred forty thousand, nine hundred eighty-five".