65604136 has 32 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 30034368.

The previous prime is 65604103. The next prime is 65604137. The reversal of 65604136 is 63140656.

It is a junction number, because it is equal to n+sod(n) for n = 65604098 and 65604107.

It is not an unprimeable number, because it can be changed into a prime (65604137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10725 + ... + 15691.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^65604136 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 65604136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66769920).

65604136 is an abundant number, since it is smaller than the sum of its proper divisors (67935704).

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

65604136 is a wasteful number, since it uses less digits than its factorization.

65604136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 65604136 is about 8099.6380166030. The cubic root of 65604136 is about 403.3144108479.

The spelling of 65604136 in words is "sixty-five million, six hundred four thousand, one hundred thirty-six".