2016591 has 8 divisors (see below), whose sum is σ = 2847024. Its totient is φ = 1265280.

The previous prime is 2016587. The next prime is 2016593. The reversal of 2016591 is 1956102.

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

It is not a de Polignac number, because 2016591 - 2² = 2016587 is a prime.

It is a super-2 number, since 2×2016591² = 8133278522562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19720 + ... + 19821.

It is an arithmetic number, because the mean of its divisors is an integer number (355878).

2^2016591 is an apocalyptic number.

2016591 is a deficient number, since it is larger than the sum of its proper divisors (830433).

2016591 is a wasteful number, since it uses less digits than its factorization.

2016591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39561.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 2016591 is about 1420.0672519286. The cubic root of 2016591 is about 126.3395352197.

The spelling of 2016591 in words is "two million, sixteen thousand, five hundred ninety-one".