65920918 has 32 divisors (see below), whose sum is σ = 120499200. Its totient is φ = 26417664.

The previous prime is 65920901. The next prime is 65920919. The reversal of 65920918 is 81902956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65920919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19446 + ... + 22582.

It is an arithmetic number, because the mean of its divisors is an integer number (3765600).

Almost surely, 2^65920918 is an apocalyptic number.

65920918 is a deficient number, since it is larger than the sum of its proper divisors (54578282).

65920918 is a wasteful number, since it uses less digits than its factorization.

65920918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 65920918 is about 8119.1697851443. The cubic root of 65920918 is about 403.9625287927.

The spelling of 65920918 in words is "sixty-five million, nine hundred twenty thousand, nine hundred eighteen".