64831589 has 2 divisors, whose sum is σ = 64831590. Its totient is φ = 64831588.

The previous prime is 64831579. The next prime is 64831607. The reversal of 64831589 is 98513846.

64831589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64529089 + 302500 = 8033^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 64831589 - 2²⁴ = 48054373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64831579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32415794 + 32415795.

It is an arithmetic number, because the mean of its divisors is an integer number (32415795).

Almost surely, 2^64831589 is an apocalyptic number.

It is an amenable number.

64831589 is a deficient number, since it is larger than the sum of its proper divisors (1).

64831589 is an equidigital number, since it uses as much as digits as its factorization.

64831589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 64831589 is about 8051.8065674729. The cubic root of 64831589 is about 401.7250270930.

The spelling of 64831589 in words is "sixty-four million, eight hundred thirty-one thousand, five hundred eighty-nine".