1687622424 has 64 divisors (see below), whose sum is σ = 4410685440. Its totient is φ = 537081600.

The previous prime is 1687622413. The next prime is 1687622437. The reversal of 1687622424 is 4242267861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329209 + ... + 334295.

It is an arithmetic number, because the mean of its divisors is an integer number (68916960).

Almost surely, 2^1687622424 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 1687622424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2205342720).

1687622424 is an abundant number, since it is smaller than the sum of its proper divisors (2723063016).

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

1687622424 is a wasteful number, since it uses less digits than its factorization.

1687622424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5720 (or 5716 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 1687622424 is about 41080.6818833378. The cubic root of 1687622424 is about 1190.5795787965.

The spelling of 1687622424 in words is "one billion, six hundred eighty-seven million, six hundred twenty-two thousand, four hundred twenty-four".