64488469 has 2 divisors, whose sum is σ = 64488470. Its totient is φ = 64488468.

The previous prime is 64488409. The next prime is 64488517. The reversal of 64488469 is 96488446.

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., 64480900 + 7569 = 8030^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 64488469 - 2⁷ = 64488341 is a prime.

It is a super-2 number, since 2×64488469² = 8317525267927922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64488409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32244234 + 32244235.

It is an arithmetic number, because the mean of its divisors is an integer number (32244235).

Almost surely, 2^64488469 is an apocalyptic number.

It is an amenable number.

64488469 is a deficient number, since it is larger than the sum of its proper divisors (1).

64488469 is an equidigital number, since it uses as much as digits as its factorization.

64488469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 49.

The square root of 64488469 is about 8030.4712813134. The cubic root of 64488469 is about 401.0150656753.

The spelling of 64488469 in words is "sixty-four million, four hundred eighty-eight thousand, four hundred sixty-nine".