64333481 has 2 divisors, whose sum is σ = 64333482. Its totient is φ = 64333480.

The previous prime is 64333471. The next prime is 64333517. The reversal of 64333481 is 18433346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56010256 + 8323225 = 7484^2 + 2885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64333481 is a prime.

It is a super-2 number, since 2×64333481² = 8277593555154722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64333421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32166740 + 32166741.

It is an arithmetic number, because the mean of its divisors is an integer number (32166741).

Almost surely, 2^64333481 is an apocalyptic number.

It is an amenable number.

64333481 is a deficient number, since it is larger than the sum of its proper divisors (1).

64333481 is an equidigital number, since it uses as much as digits as its factorization.

64333481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 64333481 is about 8020.8154822312. The cubic root of 64333481 is about 400.6935488633.

The spelling of 64333481 in words is "sixty-four million, three hundred thirty-three thousand, four hundred eighty-one".