247294985 has 16 divisors (see below), whose sum is σ = 347421312. Its totient is φ = 165436800.

The previous prime is 247294951. The next prime is 247294987. The reversal of 247294985 is 589492742.

It is not a de Polignac number, because 247294985 - 2⁶ = 247294921 is a prime.

It is a super-2 number, since 2×247294985² = 122309619212300450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (247294987) 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, 84731 + ... + 87600.

It is an arithmetic number, because the mean of its divisors is an integer number (21713832).

Almost surely, 2^247294985 is an apocalyptic number.

It is an amenable number.

247294985 is a deficient number, since it is larger than the sum of its proper divisors (100126327).

247294985 is a wasteful number, since it uses less digits than its factorization.

247294985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172384.

The product of its digits is 1451520, while the sum is 50.

The square root of 247294985 is about 15725.6155682377. The cubic root of 247294985 is about 627.6802104588.

The spelling of 247294985 in words is "two hundred forty-seven million, two hundred ninety-four thousand, nine hundred eighty-five".