245240645 has 16 divisors (see below), whose sum is σ = 317786112. Its totient is φ = 180609600.

The previous prime is 245240641. The next prime is 245240663. The reversal of 245240645 is 546042542.

245240645 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 245240645 - 2² = 245240641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245240641) 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, 19970 + ... + 29820.

It is an arithmetic number, because the mean of its divisors is an integer number (19861632).

Almost surely, 2^245240645 is an apocalyptic number.

It is an amenable number.

245240645 is a deficient number, since it is larger than the sum of its proper divisors (72545467).

245240645 is a wasteful number, since it uses less digits than its factorization.

245240645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10252.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 245240645 is about 15660.1610783542. The cubic root of 245240645 is about 625.9372774483.

The spelling of 245240645 in words is "two hundred forty-five million, two hundred forty thousand, six hundred forty-five".