6680889487 has 4 divisors (see below), whose sum is σ = 6682712080. Its totient is φ = 6679066896.

The previous prime is 6680889469. The next prime is 6680889493. The reversal of 6680889487 is 7849880866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6680889487 - 2³¹ = 4533405839 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 (6680889427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905787 + ... + 913132.

It is an arithmetic number, because the mean of its divisors is an integer number (1670678020).

Almost surely, 2^6680889487 is an apocalyptic number.

6680889487 is a deficient number, since it is larger than the sum of its proper divisors (1822593).

6680889487 is a wasteful number, since it uses less digits than its factorization.

6680889487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822592.

The product of its (nonzero) digits is 37158912, while the sum is 64.

The square root of 6680889487 is about 81736.7083200688. The cubic root of 6680889487 is about 1883.4095257208.

The spelling of 6680889487 in words is "six billion, six hundred eighty million, eight hundred eighty-nine thousand, four hundred eighty-seven".