1686080487 has 16 divisors (see below), whose sum is σ = 2766901760. Its totient is φ = 889360992.

The previous prime is 1686080471. The next prime is 1686080507. The reversal of 1686080487 is 7840806861.

It is not a de Polignac number, because 1686080487 - 2⁴ = 1686080471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686080447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3087787 + ... + 3088332.

It is an arithmetic number, because the mean of its divisors is an integer number (172931360).

Almost surely, 2^1686080487 is an apocalyptic number.

1686080487 is a deficient number, since it is larger than the sum of its proper divisors (1080821273).

1686080487 is a wasteful number, since it uses less digits than its factorization.

1686080487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176142.

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 1686080487 is about 41061.9104158586. The cubic root of 1686080487 is about 1190.2168677087.

The spelling of 1686080487 in words is "one billion, six hundred eighty-six million, eighty thousand, four hundred eighty-seven".