1680760087 has 4 divisors (see below), whose sum is σ = 1681362520. Its totient is φ = 1680157656.

The previous prime is 1680760073. The next prime is 1680760093. The reversal of 1680760087 is 7800670861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7800670861 = 54869 ⋅142169.

It is a cyclic number.

It is not a de Polignac number, because 1680760087 - 2¹¹ = 1680758039 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 (1680760987) 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, 297012 + ... + 302617.

It is an arithmetic number, because the mean of its divisors is an integer number (420340630).

Almost surely, 2^1680760087 is an apocalyptic number.

1680760087 is a deficient number, since it is larger than the sum of its proper divisors (602433).

1680760087 is an equidigital number, since it uses as much as digits as its factorization.

1680760087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602432.

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

The square root of 1680760087 is about 40997.0741273082. The cubic root of 1680760087 is about 1188.9636451807.

The spelling of 1680760087 in words is "one billion, six hundred eighty million, seven hundred sixty thousand, eighty-seven".