64205293 has 2 divisors, whose sum is σ = 64205294. Its totient is φ = 64205292.

The previous prime is 64205287. The next prime is 64205329. The reversal of 64205293 is 39250246.

Together with next prime (64205329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62758084 + 1447209 = 7922^2 + 1203^2 .

It is a cyclic number.

It is not a de Polignac number, because 64205293 - 2¹³ = 64197101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64205203) 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, 32102646 + 32102647.

It is an arithmetic number, because the mean of its divisors is an integer number (32102647).

Almost surely, 2^64205293 is an apocalyptic number.

It is an amenable number.

64205293 is a deficient number, since it is larger than the sum of its proper divisors (1).

64205293 is an equidigital number, since it uses as much as digits as its factorization.

64205293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 64205293 is about 8012.8205396103. The cubic root of 64205293 is about 400.4272372583.

The spelling of 64205293 in words is "sixty-four million, two hundred five thousand, two hundred ninety-three".