10662161 has 4 divisors (see below), whose sum is σ = 10808292. Its totient is φ = 10516032.

The previous prime is 10662149. The next prime is 10662181. The reversal of 10662161 is 16126601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5909761 + 4752400 = 2431^2 + 2180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10662161 is a prime.

It is a super-2 number, since 2×10662161² = 227363354379842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10662131) 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, 72956 + ... + 73101.

It is an arithmetic number, because the mean of its divisors is an integer number (2702073).

Almost surely, 2^10662161 is an apocalyptic number.

It is an amenable number.

10662161 is a deficient number, since it is larger than the sum of its proper divisors (146131).

10662161 is an equidigital number, since it uses as much as digits as its factorization.

10662161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146130.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 10662161 is about 3265.2964643352. The cubic root of 10662161 is about 220.0974843455.

Adding to 10662161 its reverse (16126601), we get a palindrome (26788762).

The spelling of 10662161 in words is "ten million, six hundred sixty-two thousand, one hundred sixty-one".