680205261365 has 32 divisors (see below), whose sum is σ = 948844800000. Its totient is φ = 458433546048.

The previous prime is 680205261313. The next prime is 680205261409. The reversal of 680205261365 is 563162502086.

It is a cyclic number.

It is not a de Polignac number, because 680205261365 - 2¹⁴ = 680205244981 is a prime.

It is a congruent number.

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, 11905136 + ... + 11962134.

It is an arithmetic number, because the mean of its divisors is an integer number (29651400000).

Almost surely, 2^680205261365 is an apocalyptic number.

It is an amenable number.

680205261365 is a deficient number, since it is larger than the sum of its proper divisors (268639538635).

680205261365 is a wasteful number, since it uses less digits than its factorization.

680205261365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62849.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 680205261365 in words is "six hundred eighty billion, two hundred five million, two hundred sixty-one thousand, three hundred sixty-five".