165843660 has 48 divisors (see below), whose sum is σ = 466050816. Its totient is φ = 44064192.

The previous prime is 165843649. The next prime is 165843661. The reversal of 165843660 is 66348561.

It is not an unprimeable number, because it can be changed into a prime (165843661) 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 15 ways as a sum of consecutive naturals, for example, 12097 + ... + 21863.

It is an arithmetic number, because the mean of its divisors is an integer number (9709392).

Almost surely, 2^165843660 is an apocalyptic number.

165843660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165843660 is an abundant number, since it is smaller than the sum of its proper divisors (300207156).

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

165843660 is a wasteful number, since it uses less digits than its factorization.

165843660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062 (or 10060 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 165843660 is about 12878.0301288668. The cubic root of 165843660 is about 549.4138769808.

The spelling of 165843660 in words is "one hundred sixty-five million, eight hundred forty-three thousand, six hundred sixty".