245640343 has 8 divisors (see below), whose sum is σ = 265568688. Its totient is φ = 225859584.

The previous prime is 245640323. The next prime is 245640347. The reversal of 245640343 is 343046542.

245640343 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 not a de Polignac number, because 245640343 - 2¹³ = 245632151 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 (245640347) 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, 33421 + ... + 40102.

It is an arithmetic number, because the mean of its divisors is an integer number (33196086).

Almost surely, 2^245640343 is an apocalyptic number.

245640343 is a deficient number, since it is larger than the sum of its proper divisors (19928345).

245640343 is a wasteful number, since it uses less digits than its factorization.

245640343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73793.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 245640343 is about 15672.9175012185. The cubic root of 245640343 is about 626.2771478119.

Adding to 245640343 its reverse (343046542), we get a palindrome (588686885).

The spelling of 245640343 in words is "two hundred forty-five million, six hundred forty thousand, three hundred forty-three".