65520350 has 72 divisors (see below), whose sum is σ = 145035360. Its totient is φ = 21947520.

The previous prime is 65520331. The next prime is 65520359. The reversal of 65520350 is 5302556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65520359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 114866 + ... + 115434.

It is an arithmetic number, because the mean of its divisors is an integer number (2014380).

Almost surely, 2^65520350 is an apocalyptic number.

65520350 is an abundant number, since it is smaller than the sum of its proper divisors (79515010).

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

65520350 is a wasteful number, since it uses less digits than its factorization.

65520350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 65520350 is about 8094.4641576821. The cubic root of 65520350 is about 403.1426406959.

The spelling of 65520350 in words is "sixty-five million, five hundred twenty thousand, three hundred fifty".