680565045 has 16 divisors (see below), whose sum is σ = 1089234432. Its totient is φ = 362857920.

The previous prime is 680565031. The next prime is 680565071. The reversal of 680565045 is 540565086.

It is not a de Polignac number, because 680565045 - 2¹¹ = 680562997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680564994 and 680565012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77919 + ... + 86211.

It is an arithmetic number, because the mean of its divisors is an integer number (68077152).

Almost surely, 2^680565045 is an apocalyptic number.

It is an amenable number.

680565045 is a deficient number, since it is larger than the sum of its proper divisors (408669387).

680565045 is a wasteful number, since it uses less digits than its factorization.

680565045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13772.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 680565045 is about 26087.6416143737. The cubic root of 680565045 is about 879.6094362749.

The spelling of 680565045 in words is "six hundred eighty million, five hundred sixty-five thousand, forty-five".