6412565 has 4 divisors (see below), whose sum is σ = 7695084. Its totient is φ = 5130048.

The previous prime is 6412543. The next prime is 6412589. The reversal of 6412565 is 5652146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5652146 = 2 ⋅2826073.

It can be written as a sum of positive squares in 2 ways, for example, as 4977361 + 1435204 = 2231^2 + 1198^2 .

It is a cyclic number.

It is not a de Polignac number, because 6412565 - 2¹⁰ = 6411541 is a prime.

It is a super-2 number, since 2×6412565² = 82241979758450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641252 + ... + 641261.

It is an arithmetic number, because the mean of its divisors is an integer number (1923771).

Almost surely, 2^6412565 is an apocalyptic number.

It is an amenable number.

6412565 is a deficient number, since it is larger than the sum of its proper divisors (1282519).

6412565 is a wasteful number, since it uses less digits than its factorization.

6412565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282518.

The product of its digits is 7200, while the sum is 29.

The square root of 6412565 is about 2532.3042866133. The cubic root of 6412565 is about 185.7849771738.

The spelling of 6412565 in words is "six million, four hundred twelve thousand, five hundred sixty-five".