667670385285 has 48 divisors (see below), whose sum is σ = 1160878627584. Its totient is φ = 354989056896.

The previous prime is 667670385251. The next prime is 667670385307. The reversal of 667670385285 is 582583076766.

It is a happy number.

667670385285 is a `hidden beast` number, since 6 + 6 + 7 + 6 + 70 + 38 + 528 + 5 = 666.

It is not a de Polignac number, because 667670385285 - 2¹⁷ = 667670254213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58341774 + ... + 58353216.

It is an arithmetic number, because the mean of its divisors is an integer number (24184971408).

Almost surely, 2^667670385285 is an apocalyptic number.

It is an amenable number.

667670385285 is a deficient number, since it is larger than the sum of its proper divisors (493208242299).

667670385285 is a wasteful number, since it uses less digits than its factorization.

667670385285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354 (or 15351 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 63.

The spelling of 667670385285 in words is "six hundred sixty-seven billion, six hundred seventy million, three hundred eighty-five thousand, two hundred eighty-five".