6465581467 has 4 divisors (see below), whose sum is σ = 6466402800. Its totient is φ = 6464760136.

The previous prime is 6465581443. The next prime is 6465581477. The reversal of 6465581467 is 7641855646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6465581467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6465581477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398743 + ... + 414640.

It is an arithmetic number, because the mean of its divisors is an integer number (1616600700).

Almost surely, 2^6465581467 is an apocalyptic number.

6465581467 is a deficient number, since it is larger than the sum of its proper divisors (821333).

6465581467 is an equidigital number, since it uses as much as digits as its factorization.

6465581467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821332.

The product of its digits is 4838400, while the sum is 52.

The square root of 6465581467 is about 80408.8394829822. The cubic root of 6465581467 is about 1862.9557071296.

It can be divided in two parts, 646558 and 1467, that added together give a square (648025 = 805²).

The spelling of 6465581467 in words is "six billion, four hundred sixty-five million, five hundred eighty-one thousand, four hundred sixty-seven".