245684913 has 16 divisors (see below), whose sum is σ = 333071616. Its totient is φ = 161053200.

The previous prime is 245684911. The next prime is 245684981. The reversal of 245684913 is 319486542.

It is not a de Polignac number, because 245684913 - 2¹ = 245684911 is a prime.

It is a super-2 number, since 2×245684913² = 120722152951635138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245684911) 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, 210670 + ... + 211832.

It is an arithmetic number, because the mean of its divisors is an integer number (20816976).

Almost surely, 2^245684913 is an apocalyptic number.

It is an amenable number.

245684913 is a deficient number, since it is larger than the sum of its proper divisors (87386703).

245684913 is a wasteful number, since it uses less digits than its factorization.

245684913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284.

The product of its digits is 207360, while the sum is 42.

The square root of 245684913 is about 15674.3393162200. The cubic root of 245684913 is about 626.3150236267.

The spelling of 245684913 in words is "two hundred forty-five million, six hundred eighty-four thousand, nine hundred thirteen".