9170661 has 4 divisors (see below), whose sum is σ = 12227552. Its totient is φ = 6113772.

The previous prime is 9170657. The next prime is 9170713. The reversal of 9170661 is 1660719.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1660719 = 3 ⋅553573.

It is not a de Polignac number, because 9170661 - 2² = 9170657 is a prime.

It is a Duffinian number.

9170661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9170611) 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, 1528441 + ... + 1528446.

It is an arithmetic number, because the mean of its divisors is an integer number (3056888).

Almost surely, 2^9170661 is an apocalyptic number.

It is an amenable number.

9170661 is a deficient number, since it is larger than the sum of its proper divisors (3056891).

9170661 is a wasteful number, since it uses less digits than its factorization.

9170661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056890.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 9170661 is about 3028.3099246940. The cubic root of 9170661 is about 209.3149331220.

The spelling of 9170661 in words is "nine million, one hundred seventy thousand, six hundred sixty-one".