65353530 has 64 divisors (see below), whose sum is σ = 177033600. Its totient is φ = 15294720.

The previous prime is 65353513. The next prime is 65353543. The reversal of 65353530 is 3535356.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6156 + ... + 12984.

It is an arithmetic number, because the mean of its divisors is an integer number (2766150).

Almost surely, 2^65353530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65353530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88516800).

65353530 is an abundant number, since it is smaller than the sum of its proper divisors (111680070).

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

65353530 is a wasteful number, since it uses less digits than its factorization.

65353530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879.

The product of its (nonzero) digits is 20250, while the sum is 30.

The square root of 65353530 is about 8084.1530168596. The cubic root of 65353530 is about 402.8002055455.

Adding to 65353530 its reverse (3535356), we get a palindrome (68888886).

The spelling of 65353530 in words is "sixty-five million, three hundred fifty-three thousand, five hundred thirty".