65021516 has 24 divisors (see below), whose sum is σ = 131878656. Its totient is φ = 27473040.

The previous prime is 65021501. The next prime is 65021519. The reversal of 65021516 is 61512056.

It is not an unprimeable number, because it can be changed into a prime (65021519) 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 7 ways as a sum of consecutive naturals, for example, 14366 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (5494944).

Almost surely, 2^65021516 is an apocalyptic number.

It is an amenable number.

65021516 is an abundant number, since it is smaller than the sum of its proper divisors (66857140).

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

65021516 is a wasteful number, since it uses less digits than its factorization.

65021516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32789 (or 32787 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 65021516 is about 8063.5920035676. The cubic root of 65021516 is about 402.1169350342.

The spelling of 65021516 in words is "sixty-five million, twenty-one thousand, five hundred sixteen".