64417723 has 2 divisors, whose sum is σ = 64417724. Its totient is φ = 64417722.

The previous prime is 64417697. The next prime is 64417739. The reversal of 64417723 is 32771446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64417723 - 2⁹ = 64417211 is a prime.

It is not a weakly prime, because it can be changed into another prime (64417123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32208861 + 32208862.

It is an arithmetic number, because the mean of its divisors is an integer number (32208862).

Almost surely, 2^64417723 is an apocalyptic number.

64417723 is a deficient number, since it is larger than the sum of its proper divisors (1).

64417723 is an equidigital number, since it uses as much as digits as its factorization.

64417723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 64417723 is about 8026.0652252520. The cubic root of 64417723 is about 400.8683697209.

The spelling of 64417723 in words is "sixty-four million, four hundred seventeen thousand, seven hundred twenty-three".