64174879 has 2 divisors, whose sum is σ = 64174880. Its totient is φ = 64174878.

The previous prime is 64174843. The next prime is 64174897. The reversal of 64174879 is 97847146.

Together with next prime (64174897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64174879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64174819) 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, 32087439 + 32087440.

It is an arithmetic number, because the mean of its divisors is an integer number (32087440).

Almost surely, 2^64174879 is an apocalyptic number.

64174879 is a deficient number, since it is larger than the sum of its proper divisors (1).

64174879 is an equidigital number, since it uses as much as digits as its factorization.

64174879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 64174879 is about 8010.9224812128. The cubic root of 64174879 is about 400.3639999097.

The spelling of 64174879 in words is "sixty-four million, one hundred seventy-four thousand, eight hundred seventy-nine".