64022681 has 2 divisors, whose sum is σ = 64022682. Its totient is φ = 64022680.

The previous prime is 64022677. The next prime is 64022683. The reversal of 64022681 is 18622046.

64022681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40208281 + 23814400 = 6341^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 64022681 - 2² = 64022677 is a prime.

It is a super-2 number, since 2×64022681² = 8197807364855522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 64022683, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64022683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32011340 + 32011341.

It is an arithmetic number, because the mean of its divisors is an integer number (32011341).

Almost surely, 2^64022681 is an apocalyptic number.

It is an amenable number.

64022681 is a deficient number, since it is larger than the sum of its proper divisors (1).

64022681 is an equidigital number, since it uses as much as digits as its factorization.

64022681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 64022681 is about 8001.4174369295. The cubic root of 64022681 is about 400.0472465025.

The spelling of 64022681 in words is "sixty-four million, twenty-two thousand, six hundred eighty-one".