64340723 has 2 divisors, whose sum is σ = 64340724. Its totient is φ = 64340722.

The previous prime is 64340719. The next prime is 64340747. The reversal of 64340723 is 32704346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64340723 - 2² = 64340719 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64340623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32170361 + 32170362.

It is an arithmetic number, because the mean of its divisors is an integer number (32170362).

Almost surely, 2^64340723 is an apocalyptic number.

64340723 is a deficient number, since it is larger than the sum of its proper divisors (1).

64340723 is an equidigital number, since it uses as much as digits as its factorization.

64340723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 64340723 is about 8021.2669198824. The cubic root of 64340723 is about 400.7085836153.

The spelling of 64340723 in words is "sixty-four million, three hundred forty thousand, seven hundred twenty-three".