64665347 has 2 divisors, whose sum is σ = 64665348. Its totient is φ = 64665346.

The previous prime is 64665329. The next prime is 64665407. The reversal of 64665347 is 74356646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64665347 - 2⁶ = 64665283 is a prime.

It is not a weakly prime, because it can be changed into another prime (64665047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32332673 + 32332674.

It is an arithmetic number, because the mean of its divisors is an integer number (32332674).

Almost surely, 2^64665347 is an apocalyptic number.

64665347 is a deficient number, since it is larger than the sum of its proper divisors (1).

64665347 is an equidigital number, since it uses as much as digits as its factorization.

64665347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 41.

The square root of 64665347 is about 8041.4766678764. The cubic root of 64665347 is about 401.3813636779.

The spelling of 64665347 in words is "sixty-four million, six hundred sixty-five thousand, three hundred forty-seven".