6465220465 has 32 divisors (see below), whose sum is σ = 8540017920. Its totient is φ = 4659686400.

The previous prime is 6465220457. The next prime is 6465220477. The reversal of 6465220465 is 5640225646.

It is not a de Polignac number, because 6465220465 - 2³ = 6465220457 is a prime.

It is a super-2 number, since 2×6465220465² = 83598151322109632450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3755805 + ... + 3757525.

It is an arithmetic number, because the mean of its divisors is an integer number (266875560).

Almost surely, 2^6465220465 is an apocalyptic number.

It is an amenable number.

6465220465 is a deficient number, since it is larger than the sum of its proper divisors (2074797455).

6465220465 is a wasteful number, since it uses less digits than its factorization.

6465220465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313.

The product of its (nonzero) digits is 345600, while the sum is 40.

The square root of 6465220465 is about 80406.5946611346. The cubic root of 6465220465 is about 1862.9210341329.

The spelling of 6465220465 in words is "six billion, four hundred sixty-five million, two hundred twenty thousand, four hundred sixty-five".