647513441 has 2 divisors, whose sum is σ = 647513442. Its totient is φ = 647513440.

The previous prime is 647513417. The next prime is 647513473. The reversal of 647513441 is 144315746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627001600 + 20511841 = 25040^2 + 4529^2 .

It is a cyclic number.

It is not a de Polignac number, because 647513441 - 2¹⁴ = 647497057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (647513491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323756720 + 323756721.

It is an arithmetic number, because the mean of its divisors is an integer number (323756721).

Almost surely, 2^647513441 is an apocalyptic number.

It is an amenable number.

647513441 is a deficient number, since it is larger than the sum of its proper divisors (1).

647513441 is an equidigital number, since it uses as much as digits as its factorization.

647513441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 647513441 is about 25446.2854067151. The cubic root of 647513441 is about 865.1331016849.

The spelling of 647513441 in words is "six hundred forty-seven million, five hundred thirteen thousand, four hundred forty-one".