247365 has 24 divisors (see below), whose sum is σ = 449280. Its totient is φ = 125664.

The previous prime is 247363. The next prime is 247369. The reversal of 247365 is 563742.

It is a happy number.

247365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247365 - 2¹ = 247363 is a prime.

It is a super-2 number, since 2×247365² = 122378886450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247365.

It is not an unprimeable number, because it can be changed into a prime (247363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 916 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (18720).

2²⁴⁷³⁶⁵ is an apocalyptic number.

It is an amenable number.

247365 is a deficient number, since it is larger than the sum of its proper divisors (201915).

247365 is a wasteful number, since it uses less digits than its factorization.

247365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 270 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 247365 is about 497.3580199414. The cubic root of 247365 is about 62.7739441857.

Adding to 247365 its product of digits (5040), we get a triangular number (252405 = T₇₁₀).

The spelling of 247365 in words is "two hundred forty-seven thousand, three hundred sixty-five".