65135020 has 24 divisors (see below), whose sum is σ = 136936800. Its totient is φ = 26024832.

The previous prime is 65135009. The next prime is 65135029. The reversal of 65135020 is 2053156.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 65134982 and 65135000.

It is not an unprimeable number, because it can be changed into a prime (65135029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30136 + ... + 32224.

It is an arithmetic number, because the mean of its divisors is an integer number (5705700).

Almost surely, 2^65135020 is an apocalyptic number.

It is an amenable number.

65135020 is an abundant number, since it is smaller than the sum of its proper divisors (71801780).

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

65135020 is a wasteful number, since it uses less digits than its factorization.

65135020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657 (or 3655 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 65135020 is about 8070.6269892741. The cubic root of 65135020 is about 402.3507824900.

Adding to 65135020 its reverse (2053156), we get a palindrome (67188176).

The spelling of 65135020 in words is "sixty-five million, one hundred thirty-five thousand, twenty".