680785355 has 8 divisors (see below), whose sum is σ = 817126272. Its totient is φ = 544505728.

The previous prime is 680785351. The next prime is 680785363. The reversal of 680785355 is 553587086.

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 680785355 - 2² = 680785351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680785351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14342 + ... + 39588.

It is an arithmetic number, because the mean of its divisors is an integer number (102140784).

Almost surely, 2^680785355 is an apocalyptic number.

680785355 is a deficient number, since it is larger than the sum of its proper divisors (136340917).

680785355 is a wasteful number, since it uses less digits than its factorization.

680785355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30645.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The square root of 680785355 is about 26091.8637701487. The cubic root of 680785355 is about 879.7043406731.

The spelling of 680785355 in words is "six hundred eighty million, seven hundred eighty-five thousand, three hundred fifty-five".