64541923 has 2 divisors, whose sum is σ = 64541924. Its totient is φ = 64541922.

The previous prime is 64541921. The next prime is 64541947. The reversal of 64541923 is 32914546.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64541923 - 2¹ = 64541921 is a prime.

Together with 64541921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64541921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32270961 + 32270962.

It is an arithmetic number, because the mean of its divisors is an integer number (32270962).

Almost surely, 2^64541923 is an apocalyptic number.

64541923 is a deficient number, since it is larger than the sum of its proper divisors (1).

64541923 is an equidigital number, since it uses as much as digits as its factorization.

64541923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 64541923 is about 8033.7987901117. The cubic root of 64541923 is about 401.1258345187.

The spelling of 64541923 in words is "sixty-four million, five hundred forty-one thousand, nine hundred twenty-three".