2136641 has 4 divisors (see below), whose sum is σ = 2301012. Its totient is φ = 1972272.

The previous prime is 2136601. The next prime is 2136643. The reversal of 2136641 is 1466312.

It is a happy number.

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 246016 + 1890625 = 496^2 + 1375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2136641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82166 + ... + 82191.

It is an arithmetic number, because the mean of its divisors is an integer number (575253).

2^2136641 is an apocalyptic number.

It is an amenable number.

2136641 is a deficient number, since it is larger than the sum of its proper divisors (164371).

2136641 is a wasteful number, since it uses less digits than its factorization.

2136641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164370.

The product of its digits is 864, while the sum is 23.

The square root of 2136641 is about 1461.7253503993. The cubic root of 2136641 is about 128.7984151972.

The spelling of 2136641 in words is "two million, one hundred thirty-six thousand, six hundred forty-one".