165960979 has 4 divisors (see below), whose sum is σ = 165996376. Its totient is φ = 165925584.

The previous prime is 165960937. The next prime is 165961039. The reversal of 165960979 is 979069561.

165960979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979069561 = 1031 ⋅949631.

It is a cyclic number.

It is not a de Polignac number, because 165960979 - 2⁹ = 165960467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165760979) 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, 9354 + ... + 20479.

It is an arithmetic number, because the mean of its divisors is an integer number (41499094).

Almost surely, 2^165960979 is an apocalyptic number.

165960979 is a deficient number, since it is larger than the sum of its proper divisors (35397).

165960979 is an equidigital number, since it uses as much as digits as its factorization.

165960979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35396.

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 165960979 is about 12882.5843292408. The cubic root of 165960979 is about 549.5433995555.

The spelling of 165960979 in words is "one hundred sixty-five million, nine hundred sixty thousand, nine hundred seventy-nine".