2660551560 has 96 divisors (see below), whose sum is σ = 8830823040. Its totient is φ = 694380672.

The previous prime is 2660551529. The next prime is 2660551571. The reversal of 2660551560 is 651550662.

It is a happy number.

2660551560 is a `hidden beast` number, since 26 + 60 + 5 + 515 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61702 + ... + 95541.

It is an arithmetic number, because the mean of its divisors is an integer number (91987740).

Almost surely, 2^2660551560 is an apocalyptic number.

2660551560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660551560 is an abundant number, since it is smaller than the sum of its proper divisors (6170271480).

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

2660551560 is a wasteful number, since it uses less digits than its factorization.

2660551560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157307 (or 157300 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2660551560 is about 51580.5347006019. The cubic root of 2660551560 is about 1385.6617428822.

The spelling of 2660551560 in words is "two billion, six hundred sixty million, five hundred fifty-one thousand, five hundred sixty".