680548605 has 64 divisors (see below), whose sum is σ = 1214873856. Its totient is φ = 322560000.

The previous prime is 680548601. The next prime is 680548613. The reversal of 680548605 is 506845086.

It is not a de Polignac number, because 680548605 - 2² = 680548601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680548601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1616295 + ... + 1616715.

It is an arithmetic number, because the mean of its divisors is an integer number (18982404).

Almost surely, 2^680548605 is an apocalyptic number.

It is an amenable number.

680548605 is a deficient number, since it is larger than the sum of its proper divisors (534325251).

680548605 is a wasteful number, since it uses less digits than its factorization.

680548605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 680548605 is about 26087.3265207457. The cubic root of 680548605 is about 879.6023534861.

The spelling of 680548605 in words is "six hundred eighty million, five hundred forty-eight thousand, six hundred five".