1620200688 has 80 divisors (see below), whose sum is σ = 4267584000. Its totient is φ = 529562880.

The previous prime is 1620200669. The next prime is 1620200713. The reversal of 1620200688 is 8860020261.

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, 676998 + ... + 679386.

It is an arithmetic number, because the mean of its divisors is an integer number (53344800).

Almost surely, 2^1620200688 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 1620200688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2133792000).

1620200688 is an abundant number, since it is smaller than the sum of its proper divisors (2647383312).

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

1620200688 is a wasteful number, since it uses less digits than its factorization.

1620200688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670 (or 2664 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1620200688 is about 40251.7165845135. The cubic root of 1620200688 is about 1174.5087883084.

The spelling of 1620200688 in words is "one billion, six hundred twenty million, two hundred thousand, six hundred eighty-eight".