64534069 has 2 divisors, whose sum is σ = 64534070. Its totient is φ = 64534068.

The previous prime is 64534049. The next prime is 64534081. The reversal of 64534069 is 96043546.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40475044 + 24059025 = 6362^2 + 4905^2 .

It is a cyclic number.

It is not a de Polignac number, because 64534069 - 2⁷ = 64533941 is a prime.

It is a super-2 number, since 2×64534069² = 8329292123393522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64534009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32267034 + 32267035.

It is an arithmetic number, because the mean of its divisors is an integer number (32267035).

Almost surely, 2^64534069 is an apocalyptic number.

It is an amenable number.

64534069 is a deficient number, since it is larger than the sum of its proper divisors (1).

64534069 is an equidigital number, since it uses as much as digits as its factorization.

64534069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 64534069 is about 8033.3099653879. The cubic root of 64534069 is about 401.1095630786.

The spelling of 64534069 in words is "sixty-four million, five hundred thirty-four thousand, sixty-nine".