680565480446465 has 8 divisors (see below), whose sum is σ = 816678716616360. Its totient is φ = 544452290970112.

The previous prime is 680565480446459. The next prime is 680565480446513. The reversal of 680565480446465 is 564644084565086.

It can be written as a sum of positive squares in 4 ways, for example, as 156492193779856 + 524073286666609 = 12509684^2 + 22892647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680565480446465 - 2¹⁰ = 680565480445441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50366447 + ... + 62433243.

It is an arithmetic number, because the mean of its divisors is an integer number (102084839577045).

Almost surely, 2^{680565480446465} is an apocalyptic number.

It is an amenable number.

680565480446465 is a deficient number, since it is larger than the sum of its proper divisors (136113236169895).

680565480446465 is a wasteful number, since it uses less digits than its factorization.

680565480446465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23346771.

The product of its (nonzero) digits is 2654208000, while the sum is 71.

The spelling of 680565480446465 in words is "six hundred eighty trillion, five hundred sixty-five billion, four hundred eighty million, four hundred forty-six thousand, four hundred sixty-five".