647513033 has 2 divisors, whose sum is σ = 647513034. Its totient is φ = 647513032.

The previous prime is 647512973. The next prime is 647513039. The reversal of 647513033 is 330315746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535089424 + 112423609 = 23132^2 + 10603^2 .

It is a cyclic number.

It is not a de Polignac number, because 647513033 - 2²² = 643318729 is a prime.

It is not a weakly prime, because it can be changed into another prime (647513039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323756516 + 323756517.

It is an arithmetic number, because the mean of its divisors is an integer number (323756517).

Almost surely, 2^647513033 is an apocalyptic number.

It is an amenable number.

647513033 is a deficient number, since it is larger than the sum of its proper divisors (1).

647513033 is an equidigital number, since it uses as much as digits as its factorization.

647513033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 647513033 is about 25446.2773898266. The cubic root of 647513033 is about 865.1329199772.

Adding to 647513033 its reverse (330315746), we get a palindrome (977828779).

The spelling of 647513033 in words is "six hundred forty-seven million, five hundred thirteen thousand, thirty-three".