687094272 has 160 divisors (see below), whose sum is σ = 2123256960. Its totient is φ = 218972160.

The previous prime is 687094271. The next prime is 687094273. The reversal of 687094272 is 272490786.

It is an interprime number because it is at equal distance from previous prime (687094271) and next prime (687094273).

It is not an unprimeable number, because it can be changed into a prime (687094271) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 316872 + ... + 319032.

It is an arithmetic number, because the mean of its divisors is an integer number (13270356).

Almost surely, 2^687094272 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 687094272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061628480).

687094272 is an abundant number, since it is smaller than the sum of its proper divisors (1436162688).

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

687094272 is a wasteful number, since it uses less digits than its factorization.

687094272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 687094272 is about 26212.4831330418. The cubic root of 687094272 is about 882.4134301308.

The spelling of 687094272 in words is "six hundred eighty-seven million, ninety-four thousand, two hundred seventy-two".