64988843 has 2 divisors, whose sum is σ = 64988844. Its totient is φ = 64988842.

The previous prime is 64988801. The next prime is 64988849. The reversal of 64988843 is 34888946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64988843 - 2⁸ = 64988587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64988791 and 64988800.

It is not a weakly prime, because it can be changed into another prime (64988849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32494421 + 32494422.

It is an arithmetic number, because the mean of its divisors is an integer number (32494422).

Almost surely, 2^64988843 is an apocalyptic number.

64988843 is a deficient number, since it is larger than the sum of its proper divisors (1).

64988843 is an equidigital number, since it uses as much as digits as its factorization.

64988843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 50.

The square root of 64988843 is about 8061.5657908374. The cubic root of 64988843 is about 402.0495698055.

The spelling of 64988843 in words is "sixty-four million, nine hundred eighty-eight thousand, eight hundred forty-three".