647305241 has 8 divisors (see below), whose sum is σ = 706871424. Its totient is φ = 587859120.

The previous prime is 647305231. The next prime is 647305249. The reversal of 647305241 is 142503746.

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 647305241 - 2⁶ = 647305177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647305198 and 647305207.

It is not an unprimeable number, because it can be changed into a prime (647305249) 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, 18545 + ... + 40478.

It is an arithmetic number, because the mean of its divisors is an integer number (88358928).

Almost surely, 2^647305241 is an apocalyptic number.

It is an amenable number.

647305241 is a deficient number, since it is larger than the sum of its proper divisors (59566183).

647305241 is a wasteful number, since it uses less digits than its factorization.

647305241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60031.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 647305241 is about 25442.1941074271. The cubic root of 647305241 is about 865.0403674346.

Adding to 647305241 its reverse (142503746), we get a palindrome (789808987).

The spelling of 647305241 in words is "six hundred forty-seven million, three hundred five thousand, two hundred forty-one".