64922843 has 2 divisors, whose sum is σ = 64922844. Its totient is φ = 64922842.

The previous prime is 64922821. The next prime is 64922861. The reversal of 64922843 is 34822946.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64922843 is a prime.

It is a super-3 number, since 3×64922843³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 64922797 and 64922806.

It is not a weakly prime, because it can be changed into another prime (64922863) 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, 32461421 + 32461422.

It is an arithmetic number, because the mean of its divisors is an integer number (32461422).

Almost surely, 2^64922843 is an apocalyptic number.

64922843 is a deficient number, since it is larger than the sum of its proper divisors (1).

64922843 is an equidigital number, since it uses as much as digits as its factorization.

64922843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 64922843 is about 8057.4712534393. The cubic root of 64922843 is about 401.9134220291.

The spelling of 64922843 in words is "sixty-four million, nine hundred twenty-two thousand, eight hundred forty-three".