65923723 has 4 divisors (see below), whose sum is σ = 65941960. Its totient is φ = 65905488.

The previous prime is 65923721. The next prime is 65923733. The reversal of 65923723 is 32732956.

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

It is a cyclic number.

It is not a de Polignac number, because 65923723 - 2¹ = 65923721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65923721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1665 + ... + 11602.

It is an arithmetic number, because the mean of its divisors is an integer number (16485490).

Almost surely, 2^65923723 is an apocalyptic number.

65923723 is a deficient number, since it is larger than the sum of its proper divisors (18237).

65923723 is a wasteful number, since it uses less digits than its factorization.

65923723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18236.

The product of its digits is 68040, while the sum is 37.

The square root of 65923723 is about 8119.3425226431. The cubic root of 65923723 is about 403.9682583793.

The spelling of 65923723 in words is "sixty-five million, nine hundred twenty-three thousand, seven hundred twenty-three".