1660260873 has 8 divisors (see below), whose sum is σ = 2213971200. Its totient is φ = 1106695568.

The previous prime is 1660260841. The next prime is 1660260883. The reversal of 1660260873 is 3780620661.

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 1660260873 - 2⁵ = 1660260841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1660260803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5913 + ... + 57926.

It is an arithmetic number, because the mean of its divisors is an integer number (276746400).

Almost surely, 2^1660260873 is an apocalyptic number.

It is an amenable number.

1660260873 is a deficient number, since it is larger than the sum of its proper divisors (553710327).

1660260873 is an equidigital number, since it uses as much as digits as its factorization.

1660260873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72511.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1660260873 is about 40746.2988871382. The cubic root of 1660260873 is about 1184.1101696339.

The spelling of 1660260873 in words is "one billion, six hundred sixty million, two hundred sixty thousand, eight hundred seventy-three".