2663936220 has 96 divisors (see below), whose sum is σ = 8221199616. Its totient is φ = 639129600.

The previous prime is 2663936213. The next prime is 2663936257. The reversal of 2663936220 is 226393662.

It is a happy number.

2663936220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×2663936220⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43215 + ... + 84825.

It is an arithmetic number, because the mean of its divisors is an integer number (85637496).

Almost surely, 2^2663936220 is an apocalyptic number.

2663936220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2663936220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4110599808).

2663936220 is an abundant number, since it is smaller than the sum of its proper divisors (5557263396).

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

2663936220 is a wasteful number, since it uses less digits than its factorization.

2663936220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41731 (or 41729 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 39.

The square root of 2663936220 is about 51613.3337423577. Note that the first 3 decimals coincide. The cubic root of 2663936220 is about 1386.2490905754.

The spelling of 2663936220 in words is "two billion, six hundred sixty-three million, nine hundred thirty-six thousand, two hundred twenty".