669262340065 has 32 divisors (see below), whose sum is σ = 928709017344. Its totient is φ = 457587671040.

The previous prime is 669262340039. The next prime is 669262340111. The reversal of 669262340065 is 560043262966.

It is not a de Polignac number, because 669262340065 - 2¹⁹ = 669261815777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425857 + ... + 1232833.

It is an arithmetic number, because the mean of its divisors is an integer number (29022156792).

Almost surely, 2^669262340065 is an apocalyptic number.

It is an amenable number.

669262340065 is a deficient number, since it is larger than the sum of its proper divisors (259446677279).

669262340065 is a wasteful number, since it uses less digits than its factorization.

669262340065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807897.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 669262340065 in words is "six hundred sixty-nine billion, two hundred sixty-two million, three hundred forty thousand, sixty-five".