64377329 has 2 divisors, whose sum is σ = 64377330. Its totient is φ = 64377328.

The previous prime is 64377323. The next prime is 64377353. The reversal of 64377329 is 92377346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41576704 + 22800625 = 6448^2 + 4775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64377329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64377323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32188664 + 32188665.

It is an arithmetic number, because the mean of its divisors is an integer number (32188665).

Almost surely, 2^64377329 is an apocalyptic number.

It is an amenable number.

64377329 is a deficient number, since it is larger than the sum of its proper divisors (1).

64377329 is an equidigital number, since it uses as much as digits as its factorization.

64377329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 41.

The square root of 64377329 is about 8023.5484045402. The cubic root of 64377329 is about 400.7845622325.

The spelling of 64377329 in words is "sixty-four million, three hundred seventy-seven thousand, three hundred twenty-nine".