6465601309 has 2 divisors, whose sum is σ = 6465601310. Its totient is φ = 6465601308.

The previous prime is 6465601291. The next prime is 6465601321. The reversal of 6465601309 is 9031065646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6233892025 + 231709284 = 78955^2 + 15222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6465601309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6465631309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232800654 + 3232800655.

It is an arithmetic number, because the mean of its divisors is an integer number (3232800655).

Almost surely, 2^6465601309 is an apocalyptic number.

It is an amenable number.

6465601309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465601309 is an equidigital number, since it uses as much as digits as its factorization.

6465601309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 6465601309 is about 80408.9628648449. The cubic root of 6465601309 is about 1862.9576128478.

The spelling of 6465601309 in words is "six billion, four hundred sixty-five million, six hundred one thousand, three hundred nine".