660060085 has 4 divisors (see below), whose sum is σ = 792072108. Its totient is φ = 528048064.

The previous prime is 660060061. The next prime is 660060103. The reversal of 660060085 is 580060066.

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 139216401 + 520843684 = 11799^2 + 22822^2 .

It is a cyclic number.

It is not a de Polignac number, because 660060085 - 2⁵ = 660060053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66006004 + ... + 66006013.

It is an arithmetic number, because the mean of its divisors is an integer number (198018027).

Almost surely, 2^660060085 is an apocalyptic number.

It is an amenable number.

660060085 is a deficient number, since it is larger than the sum of its proper divisors (132012023).

660060085 is a wasteful number, since it uses less digits than its factorization.

660060085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132012022.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 660060085 is about 25691.6345334430. The cubic root of 660060085 is about 870.6851892915.

The spelling of 660060085 in words is "six hundred sixty million, sixty thousand, eighty-five".