165114640 has 20 divisors (see below), whose sum is σ = 383891724. Its totient is φ = 66045824.

The previous prime is 165114623. The next prime is 165114641. The reversal of 165114640 is 46411561.

165114640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21977344 + 143137296 = 4688^2 + 11964^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 165114599 and 165114608.

It is not an unprimeable number, because it can be changed into a prime (165114641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031887 + ... + 1032046.

Almost surely, 2^165114640 is an apocalyptic number.

165114640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165114640 is an abundant number, since it is smaller than the sum of its proper divisors (218777084).

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

165114640 is a wasteful number, since it uses less digits than its factorization.

165114640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063946 (or 2063940 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 165114640 is about 12849.6941597845. The cubic root of 165114640 is about 548.6076517396.

The spelling of 165114640 in words is "one hundred sixty-five million, one hundred fourteen thousand, six hundred forty".