65540516 has 12 divisors (see below), whose sum is σ = 115832220. Its totient is φ = 32445600.

The previous prime is 65540483. The next prime is 65540543. The reversal of 65540516 is 61504556.

It can be written as a sum of positive squares in 2 ways, for example, as 63840100 + 1700416 = 7990^2 + 1304^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 80711 + ... + 81518.

It is an arithmetic number, because the mean of its divisors is an integer number (9652685).

Almost surely, 2^65540516 is an apocalyptic number.

It is an amenable number.

65540516 is a deficient number, since it is larger than the sum of its proper divisors (50291704).

65540516 is a wasteful number, since it uses less digits than its factorization.

65540516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162334 (or 162332 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 65540516 is about 8095.7097279979. The cubic root of 65540516 is about 403.1839965015.

The spelling of 65540516 in words is "sixty-five million, five hundred forty thousand, five hundred sixteen".