680120605 has 8 divisors (see below), whose sum is σ = 816295392. Its totient is φ = 543996048.

The previous prime is 680120543. The next prime is 680120629. The reversal of 680120605 is 506021086.

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 680120605 - 2⁷ = 680120477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30934 + ... + 48136.

It is an arithmetic number, because the mean of its divisors is an integer number (102036924).

Almost surely, 2^680120605 is an apocalyptic number.

It is an amenable number.

680120605 is a deficient number, since it is larger than the sum of its proper divisors (136174787).

680120605 is a wasteful number, since it uses less digits than its factorization.

680120605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25115.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 680120605 is about 26079.1220135955. The cubic root of 680120605 is about 879.4179195586.

The spelling of 680120605 in words is "six hundred eighty million, one hundred twenty thousand, six hundred five".