165711340 has 24 divisors (see below), whose sum is σ = 356483232. Its totient is φ = 64667520.

The previous prime is 165711317. The next prime is 165711341. The reversal of 165711340 is 43117561.

165711340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 165711299 and 165711308.

It is not an unprimeable number, because it can be changed into a prime (165711341) 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, 100224 + ... + 101863.

It is an arithmetic number, because the mean of its divisors is an integer number (14853468).

Almost surely, 2^165711340 is an apocalyptic number.

165711340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165711340 is an abundant number, since it is smaller than the sum of its proper divisors (190771892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165711340 is a wasteful number, since it uses less digits than its factorization.

165711340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202137 (or 202135 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 165711340 is about 12872.8916720370. The cubic root of 165711340 is about 549.2677196758.

The spelling of 165711340 in words is "one hundred sixty-five million, seven hundred eleven thousand, three hundred forty".