65116530 has 48 divisors (see below), whose sum is σ = 172186560. Its totient is φ = 17068704.

The previous prime is 65116529. The next prime is 65116531. The reversal of 65116530 is 3561156.

It is a happy number.

65116530 is a `hidden beast` number, since 6 + 5 + 1 + 1 + 653 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (65116529) and next prime (65116531).

It is a junction number, because it is equal to n+sod(n) for n = 65116494 and 65116503.

It is not an unprimeable number, because it can be changed into a prime (65116531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 822 + ... + 11441.

It is an arithmetic number, because the mean of its divisors is an integer number (3587220).

Almost surely, 2^65116530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65116530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86093280).

65116530 is an abundant number, since it is smaller than the sum of its proper divisors (107070030).

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

65116530 is a wasteful number, since it uses less digits than its factorization.

65116530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12335 (or 12332 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 65116530 is about 8069.4813959758. The cubic root of 65116530 is about 402.3127068637.

Adding to 65116530 its reverse (3561156), we get a palindrome (68677686).

It can be divided in two parts, 6511 and 6530, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 65116530 in words is "sixty-five million, one hundred sixteen thousand, five hundred thirty".