64849573 has 2 divisors, whose sum is σ = 64849574. Its totient is φ = 64849572.

The previous prime is 64849571. The next prime is 64849591. The reversal of 64849573 is 37594846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42211009 + 22638564 = 6497^2 + 4758^2 .

It is a cyclic number.

It is not a de Polignac number, because 64849573 - 2¹ = 64849571 is a prime.

Together with 64849571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64849571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32424786 + 32424787.

It is an arithmetic number, because the mean of its divisors is an integer number (32424787).

Almost surely, 2^64849573 is an apocalyptic number.

It is an amenable number.

64849573 is a deficient number, since it is larger than the sum of its proper divisors (1).

64849573 is an equidigital number, since it uses as much as digits as its factorization.

64849573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 64849573 is about 8052.9232580474. The cubic root of 64849573 is about 401.7621692489.

The spelling of 64849573 in words is "sixty-four million, eight hundred forty-nine thousand, five hundred seventy-three".