64884553 has 2 divisors, whose sum is σ = 64884554. Its totient is φ = 64884552.

The previous prime is 64884551. The next prime is 64884613. The reversal of 64884553 is 35548846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42341049 + 22543504 = 6507^2 + 4748^2 .

It is a cyclic number.

It is not a de Polignac number, because 64884553 - 2¹ = 64884551 is a prime.

Together with 64884551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64884551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32442276 + 32442277.

It is an arithmetic number, because the mean of its divisors is an integer number (32442277).

Almost surely, 2^64884553 is an apocalyptic number.

It is an amenable number.

64884553 is a deficient number, since it is larger than the sum of its proper divisors (1).

64884553 is an equidigital number, since it uses as much as digits as its factorization.

64884553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 43.

The square root of 64884553 is about 8055.0948473621. The cubic root of 64884553 is about 401.8343933923.

The spelling of 64884553 in words is "sixty-four million, eight hundred eighty-four thousand, five hundred fifty-three".