65515060 has 48 divisors (see below), whose sum is σ = 153291600. Its totient is φ = 23353344.

The previous prime is 65515057. The next prime is 65515067. The reversal of 65515060 is 6051556.

It can be written as a sum of positive squares in 8 ways, for example, as 34596 + 65480464 = 186^2 + 8092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65515067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3196 + ... + 11884.

It is an arithmetic number, because the mean of its divisors is an integer number (3193575).

Almost surely, 2^65515060 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 65515060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76645800).

65515060 is an abundant number, since it is smaller than the sum of its proper divisors (87776540).

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

65515060 is a wasteful number, since it uses less digits than its factorization.

65515060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740 (or 8738 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 65515060 is about 8094.1373845519. The cubic root of 65515060 is about 403.1317907235.

It can be divided in two parts, 6551 and 5060, that added together give a palindrome (11611).

The spelling of 65515060 in words is "sixty-five million, five hundred fifteen thousand, sixty".