687119112 has 80 divisors (see below), whose sum is σ = 2008290240. Its totient is φ = 219076704.

The previous prime is 687119047. The next prime is 687119113. The reversal of 687119112 is 211911786.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (687119113) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 8148 + ... + 37955.

It is an arithmetic number, because the mean of its divisors is an integer number (25103628).

Almost surely, 2^687119112 is an apocalyptic number.

It is an amenable number.

687119112 is an abundant number, since it is smaller than the sum of its proper divisors (1321171128).

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

687119112 is a wasteful number, since it uses less digits than its factorization.

687119112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46144 (or 46131 counting only the distinct ones).

The product of its digits is 6048, while the sum is 36.

The square root of 687119112 is about 26212.9569488068. The cubic root of 687119112 is about 882.4240637446.

The spelling of 687119112 in words is "six hundred eighty-seven million, one hundred nineteen thousand, one hundred twelve".