64321357 has 2 divisors, whose sum is σ = 64321358. Its totient is φ = 64321356.

The previous prime is 64321343. The next prime is 64321381. The reversal of 64321357 is 75312346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57320041 + 7001316 = 7571^2 + 2646^2 .

It is a cyclic number.

It is not a de Polignac number, because 64321357 - 2¹⁵ = 64288589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64321307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32160678 + 32160679.

It is an arithmetic number, because the mean of its divisors is an integer number (32160679).

Almost surely, 2^64321357 is an apocalyptic number.

It is an amenable number.

64321357 is a deficient number, since it is larger than the sum of its proper divisors (1).

64321357 is an equidigital number, since it uses as much as digits as its factorization.

64321357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 64321357 is about 8020.0596631197. The cubic root of 64321357 is about 400.6683763107.

The spelling of 64321357 in words is "sixty-four million, three hundred twenty-one thousand, three hundred fifty-seven".