2660505420 has 24 divisors (see below), whose sum is σ = 7449415344. Its totient is φ = 709468096.

The previous prime is 2660505413. The next prime is 2660505433. The reversal of 2660505420 is 245050662.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22170819 + ... + 22170938.

It is an arithmetic number, because the mean of its divisors is an integer number (310392306).

Almost surely, 2^2660505420 is an apocalyptic number.

2660505420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660505420 is an abundant number, since it is smaller than the sum of its proper divisors (4788909924).

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

2660505420 is a wasteful number, since it uses less digits than its factorization.

2660505420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44341769 (or 44341767 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2660505420 is about 51580.0874369170. The cubic root of 2660505420 is about 1385.6537326631.

The spelling of 2660505420 in words is "two billion, six hundred sixty million, five hundred five thousand, four hundred twenty".