64355393 has 2 divisors, whose sum is σ = 64355394. Its totient is φ = 64355392.

The previous prime is 64355377. The next prime is 64355407. The reversal of 64355393 is 39355346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35378704 + 28976689 = 5948^2 + 5383^2 .

It is a cyclic number.

It is not a de Polignac number, because 64355393 - 2⁴ = 64355377 is a prime.

It is not a weakly prime, because it can be changed into another prime (64355293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32177696 + 32177697.

It is an arithmetic number, because the mean of its divisors is an integer number (32177697).

Almost surely, 2^64355393 is an apocalyptic number.

It is an amenable number.

64355393 is a deficient number, since it is larger than the sum of its proper divisors (1).

64355393 is an equidigital number, since it uses as much as digits as its factorization.

64355393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 38.

The square root of 64355393 is about 8022.1813118378. The cubic root of 64355393 is about 400.7390358076.

The spelling of 64355393 in words is "sixty-four million, three hundred fifty-five thousand, three hundred ninety-three".