2663385664 has 21 divisors (see below), whose sum is σ = 5285975331. Its totient is φ = 1331486400.

The previous prime is 2663385617. The next prime is 2663385727. The reversal of 2663385664 is 4665833662.

The square root of 2663385664 is 51608.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 409639 + ... + 416089.

It is an arithmetic number, because the mean of its divisors is an integer number (251713111).

Almost surely, 2^2663385664 is an apocalyptic number.

2663385664 is the 51608-th square number.

It is an amenable number.

2663385664 is a deficient number, since it is larger than the sum of its proper divisors (2622589667).

2663385664 is an frugal number, since it uses more digits than its factorization.

2663385664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914 (or 6453 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 49.

The cubic root of 2663385664 is about 1386.1535852436.

Multiplying 2663385664 by its sum of digits (49), we get a square (130505897536 = 361256²).

The spelling of 2663385664 in words is "two billion, six hundred sixty-three million, three hundred eighty-five thousand, six hundred sixty-four".