2011170657 has 8 divisors (see below), whose sum is σ = 2681801440. Its totient is φ = 1340660160.

The previous prime is 2011170649. The next prime is 2011170697. The reversal of 2011170657 is 7560711102.

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

It is not a de Polignac number, because 2011170657 - 2³ = 2011170649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011170617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21657 + ... + 67017.

It is an arithmetic number, because the mean of its divisors is an integer number (335225180).

Almost surely, 2^2011170657 is an apocalyptic number.

It is an amenable number.

2011170657 is a deficient number, since it is larger than the sum of its proper divisors (670630783).

2011170657 is a wasteful number, since it uses less digits than its factorization.

2011170657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60143.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 2011170657 is about 44846.0773869912. The cubic root of 2011170657 is about 1262.2623872267.

Adding to 2011170657 its reverse (7560711102), we get a palindrome (9571881759).

The spelling of 2011170657 in words is "two billion, eleven million, one hundred seventy thousand, six hundred fifty-seven".