64874647 has 2 divisors, whose sum is σ = 64874648. Its totient is φ = 64874646.

The previous prime is 64874633. The next prime is 64874671. The reversal of 64874647 is 74647846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64874647 - 2²³ = 56486039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64874597 and 64874606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64874627) 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, 32437323 + 32437324.

It is an arithmetic number, because the mean of its divisors is an integer number (32437324).

Almost surely, 2^64874647 is an apocalyptic number.

64874647 is a deficient number, since it is larger than the sum of its proper divisors (1).

64874647 is an equidigital number, since it uses as much as digits as its factorization.

64874647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 46.

The square root of 64874647 is about 8054.4799335525. The cubic root of 64874647 is about 401.8139428439.

The spelling of 64874647 in words is "sixty-four million, eight hundred seventy-four thousand, six hundred forty-seven".