165064100 has 72 divisors (see below), whose sum is σ = 382683840. Its totient is φ = 61649280.

The previous prime is 165064099. The next prime is 165064129. The reversal of 165064100 is 1460561.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98066 + ... + 99734.

Almost surely, 2^165064100 is an apocalyptic number.

165064100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165064100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191341920).

165064100 is an abundant number, since it is smaller than the sum of its proper divisors (217619740).

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

165064100 is a wasteful number, since it uses less digits than its factorization.

165064100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 165064100 is about 12847.7274255021. The cubic root of 165064100 is about 548.5516715226.

The spelling of 165064100 in words is "one hundred sixty-five million, sixty-four thousand, one hundred".