687127020 has 48 divisors (see below), whose sum is σ = 2025219840. Its totient is φ = 173589696.

The previous prime is 687127013. The next prime is 687127043. The reversal of 687127020 is 20721786.

It is a super-2 number, since 2×687127020² = 944287083228160800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300232 + ... + 302511.

It is an arithmetic number, because the mean of its divisors is an integer number (42192080).

Almost surely, 2^687127020 is an apocalyptic number.

687127020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687127020 is an abundant number, since it is smaller than the sum of its proper divisors (1338092820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687127020 is a wasteful number, since it uses less digits than its factorization.

687127020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602774 (or 602772 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 687127020 is about 26213.1077898062. The cubic root of 687127020 is about 882.4274489814.

The spelling of 687127020 in words is "six hundred eighty-seven million, one hundred twenty-seven thousand, twenty".