2664785980 has 96 divisors (see below), whose sum is σ = 6017639040. Its totient is φ = 988753920.

The previous prime is 2664785971. The next prime is 2664786013. The reversal of 2664785980 is 895874662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4318632 + ... + 4319248.

It is an arithmetic number, because the mean of its divisors is an integer number (62683740).

Almost surely, 2^2664785980 is an apocalyptic number.

2664785980 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 2664785980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3008819520).

2664785980 is an abundant number, since it is smaller than the sum of its proper divisors (3352853060).

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

2664785980 is a wasteful number, since it uses less digits than its factorization.

2664785980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 2664785980 is about 51621.5650673243. The cubic root of 2664785980 is about 1386.3964732076.

The spelling of 2664785980 in words is "two billion, six hundred sixty-four million, seven hundred eighty-five thousand, nine hundred eighty".