2217629 has 4 divisors (see below), whose sum is σ = 2229084. Its totient is φ = 2206176.

The previous prime is 2217617. The next prime is 2217641. The reversal of 2217629 is 9267122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2217617) and next prime (2217641).

It can be written as a sum of positive squares in 2 ways, for example, as 2059225 + 158404 = 1435^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217629 - 2¹⁶ = 2152093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217029) 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, 5432 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (557271).

2^2217629 is an apocalyptic number.

It is an amenable number.

2217629 is a deficient number, since it is larger than the sum of its proper divisors (11455).

2217629 is a wasteful number, since it uses less digits than its factorization.

2217629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11454.

The product of its digits is 3024, while the sum is 29.

The square root of 2217629 is about 1489.1705745146. The cubic root of 2217629 is about 130.4056167365.

The spelling of 2217629 in words is "two million, two hundred seventeen thousand, six hundred twenty-nine".