2065621 has 8 divisors (see below), whose sum is σ = 2145024. Its totient is φ = 1987680.

The previous prime is 2065597. The next prime is 2065627. The reversal of 2065621 is 1265602.

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

It is not a de Polignac number, because 2065621 - 2⁷ = 2065493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2065592 and 2065601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065627) 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, 3100 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (268128).

2^2065621 is an apocalyptic number.

It is an amenable number.

2065621 is a deficient number, since it is larger than the sum of its proper divisors (79403).

2065621 is an equidigital number, since it uses as much as digits as its factorization.

2065621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2065621 is about 1437.2268436124. The cubic root of 2065621 is about 127.3552580200.

The spelling of 2065621 in words is "two million, sixty-five thousand, six hundred twenty-one".