64669607 has 2 divisors, whose sum is σ = 64669608. Its totient is φ = 64669606.

The previous prime is 64669589. The next prime is 64669639. The reversal of 64669607 is 70696646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64669607 - 2²⁴ = 47892391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64669667) 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, 32334803 + 32334804.

It is an arithmetic number, because the mean of its divisors is an integer number (32334804).

Almost surely, 2^64669607 is an apocalyptic number.

64669607 is a deficient number, since it is larger than the sum of its proper divisors (1).

64669607 is an equidigital number, since it uses as much as digits as its factorization.

64669607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 64669607 is about 8041.7415402387. The cubic root of 64669607 is about 401.3901775024.

The spelling of 64669607 in words is "sixty-four million, six hundred sixty-nine thousand, six hundred seven".