680617087 has 8 divisors (see below), whose sum is σ = 695368800. Its totient is φ = 666023424.

The previous prime is 680617079. The next prime is 680617103. The reversal of 680617087 is 780716086.

680617087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 680617087 - 2³ = 680617079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680617027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30787 + ... + 48052.

It is an arithmetic number, because the mean of its divisors is an integer number (86921100).

Almost surely, 2^680617087 is an apocalyptic number.

680617087 is a deficient number, since it is larger than the sum of its proper divisors (14751713).

680617087 is an equidigital number, since it uses as much as digits as its factorization.

680617087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79025.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 680617087 is about 26088.6390407779. The cubic root of 680617087 is about 879.6318565995.

The spelling of 680617087 in words is "six hundred eighty million, six hundred seventeen thousand, eighty-seven".