64820333 has 2 divisors, whose sum is σ = 64820334. Its totient is φ = 64820332.

The previous prime is 64820299. The next prime is 64820351. The reversal of 64820333 is 33302846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61183684 + 3636649 = 7822^2 + 1907^2 .

It is a cyclic number.

It is not a de Polignac number, because 64820333 - 2¹⁸ = 64558189 is a prime.

It is a super-3 number, since 3×64820333³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64820296 and 64820305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64820033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32410166 + 32410167.

It is an arithmetic number, because the mean of its divisors is an integer number (32410167).

Almost surely, 2^64820333 is an apocalyptic number.

It is an amenable number.

64820333 is a deficient number, since it is larger than the sum of its proper divisors (1).

64820333 is an equidigital number, since it uses as much as digits as its factorization.

64820333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 64820333 is about 8051.1075635592. The cubic root of 64820333 is about 401.7017767059.

The spelling of 64820333 in words is "sixty-four million, eight hundred twenty thousand, three hundred thirty-three".