247116985 has 8 divisors (see below), whose sum is σ = 296626176. Its totient is φ = 197636400.

The previous prime is 247116953. The next prime is 247117009. The reversal of 247116985 is 589611742.

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

It is not a de Polignac number, because 247116985 - 2⁵ = 247116953 is a prime.

It is a super-2 number, since 2×247116985² = 122133608550980450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25032 + ... + 33478.

It is an arithmetic number, because the mean of its divisors is an integer number (37078272).

Almost surely, 2^247116985 is an apocalyptic number.

It is an amenable number.

247116985 is a deficient number, since it is larger than the sum of its proper divisors (49509191).

247116985 is an equidigital number, since it uses as much as digits as its factorization.

247116985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14303.

The product of its digits is 120960, while the sum is 43.

The square root of 247116985 is about 15719.9549935743. The cubic root of 247116985 is about 627.5295753852.

The spelling of 247116985 in words is "two hundred forty-seven million, one hundred sixteen thousand, nine hundred eighty-five".