64878041 has 2 divisors, whose sum is σ = 64878042. Its totient is φ = 64878040.

The previous prime is 64878019. The next prime is 64878049. The reversal of 64878041 is 14087846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62410000 + 2468041 = 7900^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 64878041 - 2⁶ = 64877977 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64877986 and 64878004.

It is not a weakly prime, because it can be changed into another prime (64878049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32439020 + 32439021.

It is an arithmetic number, because the mean of its divisors is an integer number (32439021).

Almost surely, 2^64878041 is an apocalyptic number.

It is an amenable number.

64878041 is a deficient number, since it is larger than the sum of its proper divisors (1).

64878041 is an equidigital number, since it uses as much as digits as its factorization.

64878041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 64878041 is about 8054.6906209984. The cubic root of 64878041 is about 401.8209498582.

The spelling of 64878041 in words is "sixty-four million, eight hundred seventy-eight thousand, forty-one".