65669320 has 64 divisors (see below), whose sum is σ = 157852800. Its totient is φ = 24514560.

The previous prime is 65669269. The next prime is 65669333. The reversal of 65669320 is 2396656.

It is a self number, because there is not a number n which added to its sum of digits gives 65669320.

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 15 ways as a sum of consecutive naturals, for example, 53352 + ... + 54568.

It is an arithmetic number, because the mean of its divisors is an integer number (2466450).

Almost surely, 2^65669320 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 65669320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78926400).

65669320 is an abundant number, since it is smaller than the sum of its proper divisors (92183480).

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

65669320 is a wasteful number, since it uses less digits than its factorization.

65669320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 65669320 is about 8103.6609010990. The cubic root of 65669320 is about 403.4479438123.

The spelling of 65669320 in words is "sixty-five million, six hundred sixty-nine thousand, three hundred twenty".