160956661 has 4 divisors (see below), whose sum is σ = 163684800. Its totient is φ = 158228524.

The previous prime is 160956647. The next prime is 160956709. The reversal of 160956661 is 166659061.

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.

It is a cyclic number.

It is not a de Polignac number, because 160956661 - 2⁹ = 160956149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160966661) 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 3 ways as a sum of consecutive naturals, for example, 1363981 + ... + 1364098.

It is an arithmetic number, because the mean of its divisors is an integer number (40921200).

Almost surely, 2^160956661 is an apocalyptic number.

It is an amenable number.

160956661 is a deficient number, since it is larger than the sum of its proper divisors (2728139).

160956661 is an equidigital number, since it uses as much as digits as its factorization.

160956661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728138.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 160956661 is about 12686.8696296604. The cubic root of 160956661 is about 543.9633646122.

The spelling of 160956661 in words is "one hundred sixty million, nine hundred fifty-six thousand, six hundred sixty-one".