65221382 has 4 divisors (see below), whose sum is σ = 97832076. Its totient is φ = 32610690.

The previous prime is 65221369. The next prime is 65221393. The reversal of 65221382 is 28312256.

65221382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16305344 + ... + 16305347.

It is an arithmetic number, because the mean of its divisors is an integer number (24458019).

Almost surely, 2^65221382 is an apocalyptic number.

65221382 is a deficient number, since it is larger than the sum of its proper divisors (32610694).

65221382 is a wasteful number, since it uses less digits than its factorization.

65221382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32610693.

The product of its digits is 5760, while the sum is 29.

The square root of 65221382 is about 8075.9756066992. The cubic root of 65221382 is about 402.5285285130.

The spelling of 65221382 in words is "sixty-five million, two hundred twenty-one thousand, three hundred eighty-two".