687743104 has 32 divisors (see below), whose sum is σ = 1399276800. Its totient is φ = 336552192.

The previous prime is 687743047. The next prime is 687743113. The reversal of 687743104 is 401347786.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51144 + ... + 63175.

It is an arithmetic number, because the mean of its divisors is an integer number (43727400).

Almost surely, 2^687743104 is an apocalyptic number.

687743104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

687743104 is an abundant number, since it is smaller than the sum of its proper divisors (711533696).

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

687743104 is a wasteful number, since it uses less digits than its factorization.

687743104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114380 (or 114368 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 687743104 is about 26224.8566058997. The cubic root of 687743104 is about 882.6911008814.

The spelling of 687743104 in words is "six hundred eighty-seven million, seven hundred forty-three thousand, one hundred four".