687387036 has 96 divisors (see below), whose sum is σ = 1911250432. Its totient is φ = 188179200.

The previous prime is 687387031. The next prime is 687387059. The reversal of 687387036 is 630783786.

687387036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687387031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206586 + ... + 209886.

Almost surely, 2^687387036 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 687387036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955625216).

687387036 is an abundant number, since it is smaller than the sum of its proper divisors (1223863396).

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

687387036 is a wasteful number, since it uses less digits than its factorization.

687387036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 687387036 is about 26218.0669768006. The cubic root of 687387036 is about 882.5387415147.

The spelling of 687387036 in words is "six hundred eighty-seven million, three hundred eighty-seven thousand, thirty-six".