65728373 has 4 divisors (see below), whose sum is σ = 65744640. Its totient is φ = 65712108.

The previous prime is 65728367. The next prime is 65728379. The reversal of 65728373 is 37382756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (65728367) and next prime (65728379).

It is a cyclic number.

It is not a de Polignac number, because 65728373 - 2⁴ = 65728357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65728373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65728379) 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 3 ways as a sum of consecutive naturals, for example, 3098 + ... + 11876.

It is an arithmetic number, because the mean of its divisors is an integer number (16436160).

Almost surely, 2^65728373 is an apocalyptic number.

It is an amenable number.

65728373 is a deficient number, since it is larger than the sum of its proper divisors (16267).

65728373 is an equidigital number, since it uses as much as digits as its factorization.

65728373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16266.

The product of its digits is 211680, while the sum is 41.

The square root of 65728373 is about 8107.3036824829. The cubic root of 65728373 is about 403.5688408234.

The spelling of 65728373 in words is "sixty-five million, seven hundred twenty-eight thousand, three hundred seventy-three".