64534189 has 2 divisors, whose sum is σ = 64534190. Its totient is φ = 64534188.

The previous prime is 64534177. The next prime is 64534201. The reversal of 64534189 is 98143546.

It is a balanced prime because it is at equal distance from previous prime (64534177) and next prime (64534201).

It can be written as a sum of positive squares in only one way, i.e., 53042089 + 11492100 = 7283^2 + 3390^2 .

It is a cyclic number.

It is not a de Polignac number, because 64534189 - 2¹³ = 64525997 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 (64534109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32267094 + 32267095.

It is an arithmetic number, because the mean of its divisors is an integer number (32267095).

Almost surely, 2^64534189 is an apocalyptic number.

It is an amenable number.

64534189 is a deficient number, since it is larger than the sum of its proper divisors (1).

64534189 is an equidigital number, since it uses as much as digits as its factorization.

64534189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 64534189 is about 8033.3174342858. The cubic root of 64534189 is about 401.1098116972.

The spelling of 64534189 in words is "sixty-four million, five hundred thirty-four thousand, one hundred eighty-nine".