2660520355 has 8 divisors (see below), whose sum is σ = 3193292592. Its totient is φ = 2127970848.

The previous prime is 2660520323. The next prime is 2660520389. The reversal of 2660520355 is 5530250662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2660520355 - 2⁵ = 2660520323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660520355.

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, 28164 + ... + 78193.

It is an arithmetic number, because the mean of its divisors is an integer number (399161574).

Almost surely, 2^2660520355 is an apocalyptic number.

2660520355 is a deficient number, since it is larger than the sum of its proper divisors (532772237).

2660520355 is a wasteful number, since it uses less digits than its factorization.

2660520355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111365.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 2660520355 is about 51580.2322115750. The cubic root of 2660520355 is about 1385.6563254913.

The spelling of 2660520355 in words is "two billion, six hundred sixty million, five hundred twenty thousand, three hundred fifty-five".