662345804865 has 32 divisors (see below), whose sum is σ = 1060973303040. Its totient is φ = 352844662784.

The previous prime is 662345804849. The next prime is 662345804867. The reversal of 662345804865 is 568408543266.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 662345804865 - 2⁴ = 662345804849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (662345804867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63334717 + ... + 63345173.

It is an arithmetic number, because the mean of its divisors is an integer number (33155415720).

Almost surely, 2^662345804865 is an apocalyptic number.

It is an amenable number.

662345804865 is a deficient number, since it is larger than the sum of its proper divisors (398627498175).

662345804865 is a wasteful number, since it uses less digits than its factorization.

662345804865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14921.

The product of its (nonzero) digits is 33177600, while the sum is 57.

The spelling of 662345804865 in words is "six hundred sixty-two billion, three hundred forty-five million, eight hundred four thousand, eight hundred sixty-five".