6573666985 has 8 divisors (see below), whose sum is σ = 8056238976. Its totient is φ = 5147041200.

The previous prime is 6573666973. The next prime is 6573666997. The reversal of 6573666985 is 5896663756.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6573666973) and next prime (6573666997).

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

It is not a de Polignac number, because 6573666985 - 2⁷ = 6573666857 is a prime.

It is a Duffinian number.

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, 13986291 + ... + 13986760.

It is an arithmetic number, because the mean of its divisors is an integer number (1007029872).

Almost surely, 2^6573666985 is an apocalyptic number.

It is an amenable number.

6573666985 is a deficient number, since it is larger than the sum of its proper divisors (1482571991).

6573666985 is a wasteful number, since it uses less digits than its factorization.

6573666985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27973103.

The product of its digits is 48988800, while the sum is 61.

The square root of 6573666985 is about 81078.1535618566. The cubic root of 6573666985 is about 1873.2794394781.

The spelling of 6573666985 in words is "six billion, five hundred seventy-three million, six hundred sixty-six thousand, nine hundred eighty-five".