687870330 has 96 divisors (see below), whose sum is σ = 1972480896. Its totient is φ = 152966016.

The previous prime is 687870277. The next prime is 687870349. The reversal of 687870330 is 33078786.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48067 + ... + 60713.

It is an arithmetic number, because the mean of its divisors is an integer number (20546676).

Almost surely, 2^687870330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687870330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986240448).

687870330 is an abundant number, since it is smaller than the sum of its proper divisors (1284610566).

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

687870330 is a wasteful number, since it uses less digits than its factorization.

687870330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12708 (or 12701 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 687870330 is about 26227.2821695272. The cubic root of 687870330 is about 882.7455273735.

The spelling of 687870330 in words is "six hundred eighty-seven million, eight hundred seventy thousand, three hundred thirty".