2081807 has 8 divisors (see below), whose sum is σ = 2562336. Its totient is φ = 1647072.

The previous prime is 2081801. The next prime is 2081809. The reversal of 2081807 is 7081802.

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

It is not a de Polignac number, because 2081807 - 2¹² = 2077711 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081801) 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, 11348 + ... + 11529.

It is an arithmetic number, because the mean of its divisors is an integer number (320292).

2^2081807 is an apocalyptic number.

2081807 is a deficient number, since it is larger than the sum of its proper divisors (480529).

2081807 is a wasteful number, since it uses less digits than its factorization.

2081807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22897.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 2081807 is about 1442.8468387185. The cubic root of 2081807 is about 127.6870406152.

The spelling of 2081807 in words is "two million, eighty-one thousand, eight hundred seven".