687142900 has 36 divisors (see below), whose sum is σ = 1539207040. Its totient is φ = 265989600.

The previous prime is 687142891. The next prime is 687142913. The reversal of 687142900 is 9241786.

It is a super-3 number, since 3×687142900³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 687142900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107730 + ... + 113929.

Almost surely, 2^687142900 is an apocalyptic number.

It is an amenable number.

687142900 is an abundant number, since it is smaller than the sum of its proper divisors (852064140).

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

687142900 is a wasteful number, since it uses less digits than its factorization.

687142900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221704 (or 221697 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 687142900 is about 26213.4106899503. The cubic root of 687142900 is about 882.4342467736.

The spelling of 687142900 in words is "six hundred eighty-seven million, one hundred forty-two thousand, nine hundred".