687437060 has 96 divisors (see below), whose sum is σ = 1532172768. Its totient is φ = 258785280.

The previous prime is 687437033. The next prime is 687437071. The reversal of 687437060 is 60734786.

It can be written as a sum of positive squares in 16 ways, for example, as 265298944 + 422138116 = 16288^2 + 20546^2 .

It is a super-2 number, since 2×687437060² = 945139422922887200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 687436999 and 687437017.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4378502 + ... + 4378658.

It is an arithmetic number, because the mean of its divisors is an integer number (15960133).

Almost surely, 2^687437060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687437060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766086384).

687437060 is an abundant number, since it is smaller than the sum of its proper divisors (844735708).

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

687437060 is a wasteful number, since it uses less digits than its factorization.

687437060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 687437060 is about 26219.0209580755. The cubic root of 687437060 is about 882.5601496612.

It can be divided in two parts, 6874 and 37060, that added together give a palindrome (43934).

The spelling of 687437060 in words is "six hundred eighty-seven million, four hundred thirty-seven thousand, sixty".