65613923 has 2 divisors, whose sum is σ = 65613924. Its totient is φ = 65613922.

The previous prime is 65613893. The next prime is 65613929. The reversal of 65613923 is 32931656.

65613923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65613923 is a prime.

It is not a weakly prime, because it can be changed into another prime (65613929) 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 as a sum of consecutive naturals, namely, 32806961 + 32806962.

It is an arithmetic number, because the mean of its divisors is an integer number (32806962).

Almost surely, 2^65613923 is an apocalyptic number.

65613923 is a deficient number, since it is larger than the sum of its proper divisors (1).

65613923 is an equidigital number, since it uses as much as digits as its factorization.

65613923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 65613923 is about 8100.2421568741. The cubic root of 65613923 is about 403.3344656906.

The spelling of 65613923 in words is "sixty-five million, six hundred thirteen thousand, nine hundred twenty-three".