2006136591 has 8 divisors (see below), whose sum is σ = 2675116800. Its totient is φ = 1337290392.

The previous prime is 2006136581. The next prime is 2006136611. The reversal of 2006136591 is 1956316002.

It is a happy number.

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

It is not a de Polignac number, because 2006136591 - 2¹⁰ = 2006135567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006136541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9210 + ... + 64008.

It is an arithmetic number, because the mean of its divisors is an integer number (334389600).

Almost surely, 2^2006136591 is an apocalyptic number.

2006136591 is a deficient number, since it is larger than the sum of its proper divisors (668980209).

2006136591 is a wasteful number, since it uses less digits than its factorization.

2006136591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67005.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 2006136591 is about 44789.9161754072. The cubic root of 2006136591 is about 1261.2083375608.

The spelling of 2006136591 in words is "two billion, six million, one hundred thirty-six thousand, five hundred ninety-one".