165801336 has 32 divisors (see below), whose sum is σ = 423325440. Its totient is φ = 54090848.

The previous prime is 165801287. The next prime is 165801341. The reversal of 165801336 is 633108561.

It is a junction number, because it is equal to n+sod(n) for n = 165801297 and 165801306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72366 + ... + 74621.

It is an arithmetic number, because the mean of its divisors is an integer number (13228920).

Almost surely, 2^165801336 is an apocalyptic number.

It is an amenable number.

165801336 is an abundant number, since it is smaller than the sum of its proper divisors (257524104).

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

165801336 is a wasteful number, since it uses less digits than its factorization.

165801336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147043 (or 147039 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 165801336 is about 12876.3867602678. The cubic root of 165801336 is about 549.3671354264.

Adding to 165801336 its reverse (633108561), we get a palindrome (798909897).

The spelling of 165801336 in words is "one hundred sixty-five million, eight hundred one thousand, three hundred thirty-six".