687014020 has 96 divisors (see below), whose sum is σ = 1821818880. Its totient is φ = 211386240.

The previous prime is 687013961. The next prime is 687014059. The reversal of 687014020 is 20410786.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 687014020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118837 + ... + 124483.

It is an arithmetic number, because the mean of its divisors is an integer number (18977280).

Almost surely, 2^687014020 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 687014020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910909440).

687014020 is an abundant number, since it is smaller than the sum of its proper divisors (1134804860).

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

687014020 is a wasteful number, since it uses less digits than its factorization.

687014020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5753 (or 5751 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 687014020 is about 26210.9522909794. The cubic root of 687014020 is about 882.3790737585.

The spelling of 687014020 in words is "six hundred eighty-seven million, fourteen thousand, twenty".