165713081 has 8 divisors (see below), whose sum is σ = 166936224. Its totient is φ = 164494080.

The previous prime is 165713063. The next prime is 165713087. The reversal of 165713081 is 180317561.

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 165713081 - 2⁶ = 165713017 is a prime.

It is a super-2 number, since 2×165713081² = 54921650429025122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165713087) 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, 151346 + ... + 152436.

It is an arithmetic number, because the mean of its divisors is an integer number (20867028).

Almost surely, 2^165713081 is an apocalyptic number.

It is an amenable number.

165713081 is a deficient number, since it is larger than the sum of its proper divisors (1223143).

165713081 is a wasteful number, since it uses less digits than its factorization.

165713081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 165713081 is about 12872.9592945834. The cubic root of 165713081 is about 549.2696432451.

The spelling of 165713081 in words is "one hundred sixty-five million, seven hundred thirteen thousand, eighty-one".