65016500 has 48 divisors (see below), whose sum is σ = 150368400. Its totient is φ = 24473600.

The previous prime is 65016491. The next prime is 65016509. The reversal of 65016500 is 561056.

It is an interprime number because it is at equal distance from previous prime (65016491) and next prime (65016509).

It can be written as a sum of positive squares in 8 ways, for example, as 29899024 + 35117476 = 5468^2 + 5926^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65016509) 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 15 ways as a sum of consecutive naturals, for example, 4676 + ... + 12324.

It is an arithmetic number, because the mean of its divisors is an integer number (3132675).

Almost surely, 2^65016500 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 65016500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75184200).

65016500 is an abundant number, since it is smaller than the sum of its proper divisors (85351900).

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

65016500 is a wasteful number, since it uses less digits than its factorization.

65016500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7685 (or 7673 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 65016500 is about 8063.2809699278. The cubic root of 65016500 is about 402.1065945062.

Adding to 65016500 its reverse (561056), we get a palindrome (65577556).

The spelling of 65016500 in words is "sixty-five million, sixteen thousand, five hundred".