665160336 has 100 divisors (see below), whose sum is σ = 1958022000. Its totient is φ = 217937088.

The previous prime is 665160317. The next prime is 665160367. The reversal of 665160336 is 633061566.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 665160336.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 72115 + ... + 80813.

It is an arithmetic number, because the mean of its divisors is an integer number (19580220).

Almost surely, 2^665160336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665160336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979011000).

665160336 is an abundant number, since it is smaller than the sum of its proper divisors (1292861664).

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

665160336 is a wasteful number, since it uses less digits than its factorization.

665160336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8778 (or 8763 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 665160336 is about 25790.7025107887. The cubic root of 665160336 is about 872.9220180459.

The spelling of 665160336 in words is "six hundred sixty-five million, one hundred sixty thousand, three hundred thirty-six".