245645653 has 8 divisors (see below), whose sum is σ = 268299360. Its totient is φ = 223045680.

The previous prime is 245645639. The next prime is 245645669. The reversal of 245645653 is 356546542.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-245645653 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 (245645753) 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, 3550 + ... + 22447.

It is an arithmetic number, because the mean of its divisors is an integer number (33537420).

Almost surely, 2^245645653 is an apocalyptic number.

It is an amenable number.

245645653 is a deficient number, since it is larger than the sum of its proper divisors (22653707).

245645653 is a wasteful number, since it uses less digits than its factorization.

245645653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26867.

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

The square root of 245645653 is about 15673.0869007991. The cubic root of 245645653 is about 626.2816605176.

The spelling of 245645653 in words is "two hundred forty-five million, six hundred forty-five thousand, six hundred fifty-three".