1687214616 has 64 divisors (see below), whose sum is σ = 4391906400. Its totient is φ = 539673600.

The previous prime is 1687214603. The next prime is 1687214629. The reversal of 1687214616 is 6164127861.

It is an interprime number because it is at equal distance from previous prime (1687214603) and next prime (1687214629).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45970 + ... + 74078.

Almost surely, 2^1687214616 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 1687214616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2195953200).

1687214616 is an abundant number, since it is smaller than the sum of its proper divisors (2704691784).

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

1687214616 is a wasteful number, since it uses less digits than its factorization.

1687214616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28220 (or 28216 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 1687214616 is about 41075.7180825850. The cubic root of 1687214616 is about 1190.4836712870.

The spelling of 1687214616 in words is "one billion, six hundred eighty-seven million, two hundred fourteen thousand, six hundred sixteen".