245645563 has 8 divisors (see below), whose sum is σ = 260245008. Its totient is φ = 231062784.

The previous prime is 245645557. The next prime is 245645579. The reversal of 245645563 is 365546542.

It is a happy number.

245645563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245645563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245645503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39120 + ... + 44962.

It is an arithmetic number, because the mean of its divisors is an integer number (32530626).

Almost surely, 2^245645563 is an apocalyptic number.

245645563 is a deficient number, since it is larger than the sum of its proper divisors (14599445).

245645563 is a wasteful number, since it uses less digits than its factorization.

245645563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8333.

The product of its digits is 432000, while the sum is 40.

The square root of 245645563 is about 15673.0840296350. The cubic root of 245645563 is about 626.2815840316.

The spelling of 245645563 in words is "two hundred forty-five million, six hundred forty-five thousand, five hundred sixty-three".