6617085971 has 4 divisors (see below), whose sum is σ = 6617323344. Its totient is φ = 6616848600.

The previous prime is 6617085887. The next prime is 6617085989. The reversal of 6617085971 is 1795807166.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6617085971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6617082971) 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, 70295 + ... + 134816.

It is an arithmetic number, because the mean of its divisors is an integer number (1654330836).

Almost surely, 2^6617085971 is an apocalyptic number.

6617085971 is a deficient number, since it is larger than the sum of its proper divisors (237373).

6617085971 is a wasteful number, since it uses less digits than its factorization.

6617085971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237372.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 6617085971 is about 81345.4729594708. The cubic root of 6617085971 is about 1877.3947211510.

The spelling of 6617085971 in words is "six billion, six hundred seventeen million, eighty-five thousand, nine hundred seventy-one".