64674289 has 2 divisors, whose sum is σ = 64674290. Its totient is φ = 64674288.

The previous prime is 64674241. The next prime is 64674299. The reversal of 64674289 is 98247646.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 11675889 = 7280^2 + 3417^2 .

It is a cyclic number.

It is not a de Polignac number, because 64674289 - 2⁷ = 64674161 is a prime.

It is not a weakly prime, because it can be changed into another prime (64674299) 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, 32337144 + 32337145.

It is an arithmetic number, because the mean of its divisors is an integer number (32337145).

Almost surely, 2^64674289 is an apocalyptic number.

It is an amenable number.

64674289 is a deficient number, since it is larger than the sum of its proper divisors (1).

64674289 is an equidigital number, since it uses as much as digits as its factorization.

64674289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 64674289 is about 8042.0326410678. The cubic root of 64674289 is about 401.3998639870.

The spelling of 64674289 in words is "sixty-four million, six hundred seventy-four thousand, two hundred eighty-nine".