2066817 has 4 divisors (see below), whose sum is σ = 2755760. Its totient is φ = 1377876.

The previous prime is 2066797. The next prime is 2066833. The reversal of 2066817 is 7186602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2066817 - 2¹² = 2062721 is a prime.

It is a super-2 number, since 2×2066817² = 8543465022978, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344467 + ... + 344472.

It is an arithmetic number, because the mean of its divisors is an integer number (688940).

2^2066817 is an apocalyptic number.

It is an amenable number.

2066817 is a deficient number, since it is larger than the sum of its proper divisors (688943).

2066817 is an equidigital number, since it uses as much as digits as its factorization.

2066817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688942.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2066817 is about 1437.6428624662. The cubic root of 2066817 is about 127.3798329543.

The spelling of 2066817 in words is "two million, sixty-six thousand, eight hundred seventeen".