687017160 has 128 divisors (see below), whose sum is σ = 2295993600. Its totient is φ = 182730240.

The previous prime is 687017131. The next prime is 687017237. The reversal of 687017160 is 61710786.

It is a happy number.

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

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 31 ways as a sum of consecutive naturals, for example, 665845 + ... + 666875.

It is an arithmetic number, because the mean of its divisors is an integer number (17937450).

Almost surely, 2^687017160 is an apocalyptic number.

687017160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687017160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147996800).

687017160 is an abundant number, since it is smaller than the sum of its proper divisors (1608976440).

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

687017160 is a wasteful number, since it uses less digits than its factorization.

687017160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 687017160 is about 26211.0121895359. The cubic root of 687017160 is about 882.3804180620.

The spelling of 687017160 in words is "six hundred eighty-seven million, seventeen thousand, one hundred sixty".