64345189 has 2 divisors, whose sum is σ = 64345190. Its totient is φ = 64345188.

The previous prime is 64345163. The next prime is 64345217. The reversal of 64345189 is 98154346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 72900 = 8017^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 64345189 - 2¹⁵ = 64312421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64345129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32172594 + 32172595.

It is an arithmetic number, because the mean of its divisors is an integer number (32172595).

Almost surely, 2^64345189 is an apocalyptic number.

It is an amenable number.

64345189 is a deficient number, since it is larger than the sum of its proper divisors (1).

64345189 is an equidigital number, since it uses as much as digits as its factorization.

64345189 is an odious number, because the sum of its binary digits is odd.

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

The square root of 64345189 is about 8021.5453000030. The cubic root of 64345189 is about 400.7178546909.

The spelling of 64345189 in words is "sixty-four million, three hundred forty-five thousand, one hundred eighty-nine".