2072217 has 16 divisors (see below), whose sum is σ = 3192192. Its totient is φ = 1171200.

The previous prime is 2072209. The next prime is 2072267. The reversal of 2072217 is 7122702.

It is not a de Polignac number, because 2072217 - 2³ = 2072209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2072193 and 2072202.

It is not an unprimeable number, because it can be changed into a prime (2072207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1633 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (199512).

2^2072217 is an apocalyptic number.

It is an amenable number.

2072217 is a deficient number, since it is larger than the sum of its proper divisors (1119975).

2072217 is a wasteful number, since it uses less digits than its factorization.

2072217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 2072217 is about 1439.5197115705. The cubic root of 2072217 is about 127.4906721357.

Adding to 2072217 its reverse (7122702), we get a palindrome (9194919).

The spelling of 2072217 in words is "two million, seventy-two thousand, two hundred seventeen".