65853920 has 192 divisors, whose sum is σ = 188116992. Its totient is φ = 21504000.

The previous prime is 65853917. The next prime is 65853947. The reversal of 65853920 is 2935856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 927485 + ... + 927555.

It is an arithmetic number, because the mean of its divisors is an integer number (979776).

Almost surely, 2^65853920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65853920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94058496).

65853920 is an abundant number, since it is smaller than the sum of its proper divisors (122263072).

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

65853920 is a wasteful number, since it uses less digits than its factorization.

65853920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 65853920 is about 8115.0428218217. The cubic root of 65853920 is about 403.8256281120.

The spelling of 65853920 in words is "sixty-five million, eight hundred fifty-three thousand, nine hundred twenty".