2136845 has 4 divisors (see below), whose sum is σ = 2564220. Its totient is φ = 1709472.

The previous prime is 2136839. The next prime is 2136853. The reversal of 2136845 is 5486312.

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 292681 + 1844164 = 541^2 + 1358^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136845 - 2⁴ = 2136829 is a prime.

It is a super-2 number, since 2×2136845² = 9132213108050, which contains 22 as substring.

It is a plaindrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213680 + ... + 213689.

It is an arithmetic number, because the mean of its divisors is an integer number (641055).

2^2136845 is an apocalyptic number.

It is an amenable number.

2136845 is a deficient number, since it is larger than the sum of its proper divisors (427375).

2136845 is an equidigital number, since it uses as much as digits as its factorization.

2136845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427374.

The product of its digits is 5760, while the sum is 29.

The square root of 2136845 is about 1461.7951292845. The cubic root of 2136845 is about 128.8025141608.

The spelling of 2136845 in words is "two million, one hundred thirty-six thousand, eight hundred forty-five".