65866373 has 4 divisors (see below), whose sum is σ = 65903628. Its totient is φ = 65829120.

The previous prime is 65866363. The next prime is 65866387. The reversal of 65866373 is 37366856.

65866373 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 can be written as a sum of positive squares in 2 ways, for example, as 31561924 + 34304449 = 5618^2 + 5857^2 .

It is a cyclic number.

It is not a de Polignac number, because 65866373 - 2⁶ = 65866309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65866343) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 15836 + ... + 19557.

It is an arithmetic number, because the mean of its divisors is an integer number (16475907).

Almost surely, 2^65866373 is an apocalyptic number.

It is an amenable number.

65866373 is a deficient number, since it is larger than the sum of its proper divisors (37255).

65866373 is a wasteful number, since it uses less digits than its factorization.

65866373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37254.

The product of its digits is 544320, while the sum is 44.

The square root of 65866373 is about 8115.8100643127. The cubic root of 65866373 is about 403.8510810316.

The spelling of 65866373 in words is "sixty-five million, eight hundred sixty-six thousand, three hundred seventy-three".