6658273085 has 4 divisors (see below), whose sum is σ = 7989927708. Its totient is φ = 5326618464.

The previous prime is 6658273081. The next prime is 6658273087. The reversal of 6658273085 is 5803728566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2195765881 + 4462507204 = 46859^2 + 66802^2 .

It is a cyclic number.

It is not a de Polignac number, because 6658273085 - 2² = 6658273081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6658273081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665827304 + ... + 665827313.

It is an arithmetic number, because the mean of its divisors is an integer number (1997481927).

Almost surely, 2^6658273085 is an apocalyptic number.

It is an amenable number.

6658273085 is a deficient number, since it is larger than the sum of its proper divisors (1331654623).

6658273085 is a wasteful number, since it uses less digits than its factorization.

6658273085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331654622.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The square root of 6658273085 is about 81598.2419234630. The cubic root of 6658273085 is about 1881.2818597637.

The spelling of 6658273085 in words is "six billion, six hundred fifty-eight million, two hundred seventy-three thousand, eighty-five".