65135532 has 96 divisors (see below), whose sum is σ = 191116800. Its totient is φ = 16773120.

The previous prime is 65135507. The next prime is 65135533. The reversal of 65135532 is 23553156.

It is a self number, because there is not a number n which added to its sum of digits gives 65135532.

It is not an unprimeable number, because it can be changed into a prime (65135533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144844 + ... + 145292.

It is an arithmetic number, because the mean of its divisors is an integer number (1990800).

Almost surely, 2^65135532 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 65135532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95558400).

65135532 is an abundant number, since it is smaller than the sum of its proper divisors (125981268).

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

65135532 is a wasteful number, since it uses less digits than its factorization.

65135532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 629 counting only the distinct ones).

The product of its digits is 13500, while the sum is 30.

The square root of 65135532 is about 8070.6587091761. The cubic root of 65135532 is about 402.3518367260.

Adding to 65135532 its reverse (23553156), we get a palindrome (88688688).

The spelling of 65135532 in words is "sixty-five million, one hundred thirty-five thousand, five hundred thirty-two".