4217661 has 12 divisors (see below), whose sum is σ = 6962592. Its totient is φ = 2410056.

The previous prime is 4217623. The next prime is 4217669. The reversal of 4217661 is 1667124.

It is not a de Polignac number, because 4217661 - 2⁶ = 4217597 is a prime.

4217661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4217669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33411 + ... + 33536.

It is an arithmetic number, because the mean of its divisors is an integer number (580216).

Almost surely, 2^4217661 is an apocalyptic number.

It is an amenable number.

4217661 is a deficient number, since it is larger than the sum of its proper divisors (2744931).

4217661 is a wasteful number, since it uses less digits than its factorization.

4217661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66960 (or 66957 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 4217661 is about 2053.6944758167. The cubic root of 4217661 is about 161.5686972707.

The spelling of 4217661 in words is "four million, two hundred seventeen thousand, six hundred sixty-one".