64600553 has 2 divisors, whose sum is σ = 64600554. Its totient is φ = 64600552.

The previous prime is 64600531. The next prime is 64600573. The reversal of 64600553 is 35500646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61669609 + 2930944 = 7853^2 + 1712^2 .

It is a cyclic number.

It is not a de Polignac number, because 64600553 - 2¹² = 64596457 is a prime.

It is not a weakly prime, because it can be changed into another prime (64600573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32300276 + 32300277.

It is an arithmetic number, because the mean of its divisors is an integer number (32300277).

Almost surely, 2^64600553 is an apocalyptic number.

It is an amenable number.

64600553 is a deficient number, since it is larger than the sum of its proper divisors (1).

64600553 is an equidigital number, since it uses as much as digits as its factorization.

64600553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 64600553 is about 8037.4469205090. The cubic root of 64600553 is about 401.2472589041.

The spelling of 64600553 in words is "sixty-four million, six hundred thousand, five hundred fifty-three".