247417085 has 8 divisors (see below), whose sum is σ = 298792536. Its totient is φ = 196672320.

The previous prime is 247417073. The next prime is 247417103. The reversal of 247417085 is 580714742.

It can be written as a sum of positive squares in 4 ways, for example, as 27102436 + 220314649 = 5206^2 + 14843^2 .

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

It is not a de Polignac number, because 247417085 - 2²⁶ = 180308221 is a prime.

It is a super-2 number, since 2×247417085² = 122430427899794450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 156806 + ... + 158375.

It is an arithmetic number, because the mean of its divisors is an integer number (37349067).

Almost surely, 2^247417085 is an apocalyptic number.

It is an amenable number.

247417085 is a deficient number, since it is larger than the sum of its proper divisors (51375451).

247417085 is a wasteful number, since it uses less digits than its factorization.

247417085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315343.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 247417085 is about 15729.4972901234. The cubic root of 247417085 is about 627.7834975564.

The spelling of 247417085 in words is "two hundred forty-seven million, four hundred seventeen thousand, eighty-five".