64495589 has 2 divisors, whose sum is σ = 64495590. Its totient is φ = 64495588.

The previous prime is 64495559. The next prime is 64495601. The reversal of 64495589 is 98559446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57259489 + 7236100 = 7567^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 64495589 - 2¹⁶ = 64430053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64495559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32247794 + 32247795.

It is an arithmetic number, because the mean of its divisors is an integer number (32247795).

Almost surely, 2^64495589 is an apocalyptic number.

It is an amenable number.

64495589 is a deficient number, since it is larger than the sum of its proper divisors (1).

64495589 is an equidigital number, since it uses as much as digits as its factorization.

64495589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 50.

The square root of 64495589 is about 8030.9145805444. The cubic root of 64495589 is about 401.0298234671.

The spelling of 64495589 in words is "sixty-four million, four hundred ninety-five thousand, five hundred eighty-nine".