65720214 has 96 divisors (see below), whose sum is σ = 172892160. Its totient is φ = 18125856.

The previous prime is 65720191. The next prime is 65720257. The reversal of 65720214 is 41202756.

65720214 is a `hidden beast` number, since 657 + 2 + 0 + 2 + 1 + 4 = 666.

65720214 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 517419 + ... + 517545.

It is an arithmetic number, because the mean of its divisors is an integer number (1800960).

Almost surely, 2^65720214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65720214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86446080).

65720214 is an abundant number, since it is smaller than the sum of its proper divisors (107171946).

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

65720214 is a wasteful number, since it uses less digits than its factorization.

65720214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 65720214 is about 8106.8004786105. The cubic root of 65720214 is about 403.5521415185.

The spelling of 65720214 in words is "sixty-five million, seven hundred twenty thousand, two hundred fourteen".