64653647 has 2 divisors, whose sum is σ = 64653648. Its totient is φ = 64653646.

The previous prime is 64653607. The next prime is 64653671. The reversal of 64653647 is 74635646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64653647 - 2⁶ = 64653583 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 (64653607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32326823 + 32326824.

It is an arithmetic number, because the mean of its divisors is an integer number (32326824).

Almost surely, 2^64653647 is an apocalyptic number.

64653647 is a deficient number, since it is larger than the sum of its proper divisors (1).

64653647 is an equidigital number, since it uses as much as digits as its factorization.

64653647 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 64653647 is about 8040.7491566396. The cubic root of 64653647 is about 401.3571547034.

The spelling of 64653647 in words is "sixty-four million, six hundred fifty-three thousand, six hundred forty-seven".