680663015555 has 8 divisors (see below), whose sum is σ = 864842419872. Its totient is φ = 512499211648.

The previous prime is 680663015533. The next prime is 680663015563. The reversal of 680663015555 is 555510366086.

680663015555 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 680663015555 - 2⁶ = 680663015491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4003900007 + ... + 4003900176.

It is an arithmetic number, because the mean of its divisors is an integer number (108105302484).

Almost surely, 2^680663015555 is an apocalyptic number.

680663015555 is a deficient number, since it is larger than the sum of its proper divisors (184179404317).

680663015555 is a wasteful number, since it uses less digits than its factorization.

680663015555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8007800205.

The product of its (nonzero) digits is 3240000, while the sum is 50.

The spelling of 680663015555 in words is "six hundred eighty billion, six hundred sixty-three million, fifteen thousand, five hundred fifty-five".