165020669 has 8 divisors (see below), whose sum is σ = 180832512. Its totient is φ = 149343840.

The previous prime is 165020623. The next prime is 165020741. The reversal of 165020669 is 966020561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 165020669 - 2²⁰ = 163972093 is a prime.

It is a super-2 number, since 2×165020669² = 54463642394415122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165020069) 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, 31184 + ... + 36089.

It is an arithmetic number, because the mean of its divisors is an integer number (22604064).

Almost surely, 2^165020669 is an apocalyptic number.

It is an amenable number.

165020669 is a deficient number, since it is larger than the sum of its proper divisors (15811843).

165020669 is a wasteful number, since it uses less digits than its factorization.

165020669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67507.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 165020669 is about 12846.0370932050. The cubic root of 165020669 is about 548.5035564015.

The spelling of 165020669 in words is "one hundred sixty-five million, twenty thousand, six hundred sixty-nine".