2011786685 has 8 divisors (see below), whose sum is σ = 2418560736. Its totient is φ = 1606484880.

The previous prime is 2011786643. The next prime is 2011786687. The reversal of 2011786685 is 5866871102.

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 2011786685 - 2²⁰ = 2010738109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011786687) 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, 365051 + ... + 370520.

It is an arithmetic number, because the mean of its divisors is an integer number (302320092).

Almost surely, 2^2011786685 is an apocalyptic number.

It is an amenable number.

2011786685 is a deficient number, since it is larger than the sum of its proper divisors (406774051).

2011786685 is an equidigital number, since it uses as much as digits as its factorization.

2011786685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736123.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2011786685 is about 44852.9451095466. The cubic root of 2011786685 is about 1262.3912524048.

The spelling of 2011786685 in words is "two billion, eleven million, seven hundred eighty-six thousand, six hundred eighty-five".