65815016 has 16 divisors (see below), whose sum is σ = 124891200. Its totient is φ = 32510704.

The previous prime is 65815003. The next prime is 65815019. The reversal of 65815016 is 61051856.

It is a happy number.

65815016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65815019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48896 + ... + 50223.

It is an arithmetic number, because the mean of its divisors is an integer number (7805700).

Almost surely, 2^65815016 is an apocalyptic number.

It is an amenable number.

65815016 is a deficient number, since it is larger than the sum of its proper divisors (59076184).

65815016 is a wasteful number, since it uses less digits than its factorization.

65815016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99208 (or 99204 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 65815016 is about 8112.6454378335. The cubic root of 65815016 is about 403.7460908222.

The spelling of 65815016 in words is "sixty-five million, eight hundred fifteen thousand, sixteen".