245747385 has 64 divisors (see below), whose sum is σ = 485775360. Its totient is φ = 117054720.

The previous prime is 245747353. The next prime is 245747389. The reversal of 245747385 is 583747542.

245747385 is a `hidden beast` number, since 2 + 4 + 574 + 73 + 8 + 5 = 666.

It is not a de Polignac number, because 245747385 - 2⁵ = 245747353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 245747385.

It is not an unprimeable number, because it can be changed into a prime (245747389) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 52147 + ... + 56663.

It is an arithmetic number, because the mean of its divisors is an integer number (7590240).

Almost surely, 2^245747385 is an apocalyptic number.

It is an amenable number.

245747385 is a deficient number, since it is larger than the sum of its proper divisors (240027975).

245747385 is a wasteful number, since it uses less digits than its factorization.

245747385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575 (or 4569 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The square root of 245747385 is about 15676.3320008221. The cubic root of 245747385 is about 626.3681049437.

The spelling of 245747385 in words is "two hundred forty-five million, seven hundred forty-seven thousand, three hundred eighty-five".