687981483 has 24 divisors (see below), whose sum is σ = 1202524128. Its totient is φ = 370006272.

The previous prime is 687981457. The next prime is 687981487. The reversal of 687981483 is 384189786.

687981483 is a `hidden beast` number, since 6 + 87 + 9 + 81 + 483 = 666.

It is not a de Polignac number, because 687981483 - 2⁸ = 687981227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687981487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320116 + ... + 322257.

It is an arithmetic number, because the mean of its divisors is an integer number (50105172).

Almost surely, 2^687981483 is an apocalyptic number.

687981483 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

687981483 is a deficient number, since it is larger than the sum of its proper divisors (514542645).

687981483 is a wasteful number, since it uses less digits than its factorization.

687981483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642403 (or 642400 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 687981483 is about 26229.4011178296. The cubic root of 687981483 is about 882.7930724435.

The spelling of 687981483 in words is "six hundred eighty-seven million, nine hundred eighty-one thousand, four hundred eighty-three".