247085870 has 16 divisors (see below), whose sum is σ = 446450400. Its totient is φ = 98457504.

The previous prime is 247085863. The next prime is 247085921. The reversal of 247085870 is 78580742.

It is a super-2 number, since 2×247085870² = 122102854307313800, which contains 22 as substring.

It is a congruent 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, 44345 + ... + 49604.

It is an arithmetic number, because the mean of its divisors is an integer number (27903150).

Almost surely, 2^247085870 is an apocalyptic number.

247085870 is a deficient number, since it is larger than the sum of its proper divisors (199364530).

247085870 is a wasteful number, since it uses less digits than its factorization.

247085870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94219.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 247085870 is about 15718.9652967363. The cubic root of 247085870 is about 627.5032364399.

The spelling of 247085870 in words is "two hundred forty-seven million, eighty-five thousand, eight hundred seventy".