2006513 has 4 divisors (see below), whose sum is σ = 2009460. Its totient is φ = 2003568.

The previous prime is 2006507. The next prime is 2006549. The reversal of 2006513 is 3156002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3156002 = 2 ⋅1578001.

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 908209 = 1048^2 + 953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006513 - 2¹⁰ = 2005489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2006491 and 2006500.

It is not an unprimeable number, because it can be changed into a prime (2006503) 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, 131 + ... + 2007.

It is an arithmetic number, because the mean of its divisors is an integer number (502365).

2^2006513 is an apocalyptic number.

It is an amenable number.

2006513 is a deficient number, since it is larger than the sum of its proper divisors (2947).

2006513 is a wasteful number, since it uses less digits than its factorization.

2006513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2006513 is about 1416.5143839722. The cubic root of 2006513 is about 126.1287212297.

The spelling of 2006513 in words is "two million, six thousand, five hundred thirteen".