165459660 has 24 divisors (see below), whose sum is σ = 463287216. Its totient is φ = 44122560.

The previous prime is 165459647. The next prime is 165459661. The reversal of 165459660 is 66954561.

It is not an unprimeable number, because it can be changed into a prime (165459661) 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, 1378771 + ... + 1378890.

It is an arithmetic number, because the mean of its divisors is an integer number (19303634).

Almost surely, 2^165459660 is an apocalyptic number.

165459660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165459660 is an abundant number, since it is smaller than the sum of its proper divisors (297827556).

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

165459660 is a wasteful number, since it uses less digits than its factorization.

165459660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757673 (or 2757671 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 165459660 is about 12863.1123760931. The cubic root of 165459660 is about 548.9895054746.

The spelling of 165459660 in words is "one hundred sixty-five million, four hundred fifty-nine thousand, six hundred sixty".