1596665664 has 252 divisors, whose sum is σ = 5199725440. Its totient is φ = 467596800.

The previous prime is 1596665659. The next prime is 1596665683. The reversal of 1596665664 is 4665666951.

Its product of digits (6998400) is a multiple of the sum of its prime factors (810).

It is a self number, because there is not a number n which added to its sum of digits gives 1596665664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2160207 + ... + 2160945.

Almost surely, 2^1596665664 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 1596665664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2599862720).

1596665664 is an abundant number, since it is smaller than the sum of its proper divisors (3603059776).

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

1596665664 is a wasteful number, since it uses less digits than its factorization.

1596665664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 786 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The square root of 1596665664 is about 39958.2990628981. The cubic root of 1596665664 is about 1168.7940587774.

The spelling of 1596665664 in words is "one billion, five hundred ninety-six million, six hundred sixty-five thousand, six hundred sixty-four".