687506260 has 72 divisors (see below), whose sum is σ = 1767921120. Its totient is φ = 223304256.

The previous prime is 687506257. The next prime is 687506263. The reversal of 687506260 is 62605786.

It is an interprime number because it is at equal distance from previous prime (687506257) and next prime (687506263).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687506263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159 + ... + 37081.

It is an arithmetic number, because the mean of its divisors is an integer number (24554460).

Almost surely, 2^687506260 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 687506260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883960560).

687506260 is an abundant number, since it is smaller than the sum of its proper divisors (1080414860).

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

687506260 is a wasteful number, since it uses less digits than its factorization.

687506260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36965 (or 36956 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 687506260 is about 26220.3405774982. The cubic root of 687506260 is about 882.5897626089.

The spelling of 687506260 in words is "six hundred eighty-seven million, five hundred six thousand, two hundred sixty".