64705123 has 8 divisors (see below), whose sum is σ = 75202560. Its totient is φ = 54521160.

The previous prime is 64705097. The next prime is 64705129. The reversal of 64705123 is 32150746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64705123 - 2⁹ = 64704611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64705091 and 64705100.

It is not an unprimeable number, because it can be changed into a prime (64705129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77923 + ... + 78748.

It is an arithmetic number, because the mean of its divisors is an integer number (9400320).

Almost surely, 2^64705123 is an apocalyptic number.

64705123 is a deficient number, since it is larger than the sum of its proper divisors (10497437).

64705123 is a wasteful number, since it uses less digits than its factorization.

64705123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156737.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 64705123 is about 8043.9494652813. The cubic root of 64705123 is about 401.4636440827.

Adding to 64705123 its reverse (32150746), we get a palindrome (96855869).

The spelling of 64705123 in words is "sixty-four million, seven hundred five thousand, one hundred twenty-three".