10217661 has 8 divisors (see below), whose sum is σ = 13991904. Its totient is φ = 6627600.

The previous prime is 10217653. The next prime is 10217671. The reversal of 10217661 is 16671201.

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

It is not a de Polignac number, because 10217661 - 2³ = 10217653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10217671) 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, 45915 + ... + 46136.

It is an arithmetic number, because the mean of its divisors is an integer number (1748988).

Almost surely, 2^10217661 is an apocalyptic number.

It is an amenable number.

10217661 is a deficient number, since it is larger than the sum of its proper divisors (3774243).

10217661 is an equidigital number, since it uses as much as digits as its factorization.

10217661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92091.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 10217661 is about 3196.5076255188. The cubic root of 10217661 is about 216.9953845281.

Adding to 10217661 its reverse (16671201), we get a palindrome (26888862).

It can be divided in two parts, 10217 and 661, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 10217661 in words is "ten million, two hundred seventeen thousand, six hundred sixty-one".