687003744 has 96 divisors (see below), whose sum is σ = 2150668800. Its totient is φ = 187748352.

The previous prime is 687003683. The next prime is 687003773. The reversal of 687003744 is 447300786.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6769 + ... + 37680.

It is an arithmetic number, because the mean of its divisors is an integer number (22402800).

Almost surely, 2^687003744 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 687003744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075334400).

687003744 is an abundant number, since it is smaller than the sum of its proper divisors (1463665056).

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

687003744 is a wasteful number, since it uses less digits than its factorization.

687003744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44492 (or 44484 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 687003744 is about 26210.7562653198. The cubic root of 687003744 is about 882.3746743468.

The spelling of 687003744 in words is "six hundred eighty-seven million, three thousand, seven hundred forty-four".