165165701 has 8 divisors (see below), whose sum is σ = 171055200. Its totient is φ = 159289200.

The previous prime is 165165631. The next prime is 165165713. The reversal of 165165701 is 107561561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165165701 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 (165165901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27770 + ... + 33188.

It is an arithmetic number, because the mean of its divisors is an integer number (21381900).

Almost surely, 2^165165701 is an apocalyptic number.

It is an amenable number.

165165701 is a deficient number, since it is larger than the sum of its proper divisors (5889499).

165165701 is a wasteful number, since it uses less digits than its factorization.

165165701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 165165701 is about 12851.6808628288. The cubic root of 165165701 is about 548.6641974386.

The spelling of 165165701 in words is "one hundred sixty-five million, one hundred sixty-five thousand, seven hundred one".