64205369 has 2 divisors, whose sum is σ = 64205370. Its totient is φ = 64205368.

The previous prime is 64205353. The next prime is 64205381. The reversal of 64205369 is 96350246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 13225 = 8012^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 64205369 - 2⁴ = 64205353 is a prime.

It is a super-2 number, since 2×64205369² = 8244658816852322, which contains 22 as substring.

It is equal to p_3796514 and since 64205369 and 3796514 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64205329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32102684 + 32102685.

It is an arithmetic number, because the mean of its divisors is an integer number (32102685).

Almost surely, 2^64205369 is an apocalyptic number.

It is an amenable number.

64205369 is a deficient number, since it is larger than the sum of its proper divisors (1).

64205369 is an equidigital number, since it uses as much as digits as its factorization.

64205369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 64205369 is about 8012.8252820088. The cubic root of 64205369 is about 400.4273952539.

The spelling of 64205369 in words is "sixty-four million, two hundred five thousand, three hundred sixty-nine".