2660780460 has 96 divisors (see below), whose sum is σ = 8101416960. Its totient is φ = 648582912.

The previous prime is 2660780453. The next prime is 2660780477. The reversal of 2660780460 is 640870662.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 63781 + ... + 96899.

It is an arithmetic number, because the mean of its divisors is an integer number (84389760).

Almost surely, 2^2660780460 is an apocalyptic number.

2660780460 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 2660780460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4050708480).

2660780460 is an abundant number, since it is smaller than the sum of its proper divisors (5440636500).

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

2660780460 is a wasteful number, since it uses less digits than its factorization.

2660780460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33247 (or 33245 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 2660780460 is about 51582.7535131656. The cubic root of 2660780460 is about 1385.7014801159.

The spelling of 2660780460 in words is "two billion, six hundred sixty million, seven hundred eighty thousand, four hundred sixty".