2006658517 has 4 divisors (see below), whose sum is σ = 2006858476. Its totient is φ = 2006458560.

The previous prime is 2006658503. The next prime is 2006658527. The reversal of 2006658517 is 7158566002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 905347921 + 1101310596 = 30089^2 + 33186^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006658517 - 2⁷ = 2006658389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2006658517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006658527) 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, 84084 + ... + 105277.

It is an arithmetic number, because the mean of its divisors is an integer number (501714619).

Almost surely, 2^2006658517 is an apocalyptic number.

It is an amenable number.

2006658517 is a deficient number, since it is larger than the sum of its proper divisors (199959).

2006658517 is a wasteful number, since it uses less digits than its factorization.

2006658517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199958.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 2006658517 is about 44795.7421748987. The cubic root of 2006658517 is about 1261.3177020559.

The spelling of 2006658517 in words is "two billion, six million, six hundred fifty-eight thousand, five hundred seventeen".