245240613 has 6 divisors (see below), whose sum is σ = 354236454. Its totient is φ = 163493736.

The previous prime is 245240609. The next prime is 245240627. The reversal of 245240613 is 316042542.

245240613 is a `hidden beast` number, since 2 + 4 + 5 + 2 + 40 + 613 = 666.

245240613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 168818049 + 76422564 = 12993^2 + 8742^2 .

It is not a de Polignac number, because 245240613 - 2² = 245240609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245240663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13624470 + ... + 13624487.

It is an arithmetic number, because the mean of its divisors is an integer number (59039409).

Almost surely, 2^245240613 is an apocalyptic number.

It is an amenable number.

245240613 is a deficient number, since it is larger than the sum of its proper divisors (108995841).

245240613 is a wasteful number, since it uses less digits than its factorization.

245240613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27248963 (or 27248960 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 245240613 is about 15660.1600566533. The cubic root of 245240613 is about 625.9372502233.

The spelling of 245240613 in words is "two hundred forty-five million, two hundred forty thousand, six hundred thirteen".