64433441 has 2 divisors, whose sum is σ = 64433442. Its totient is φ = 64433440.

The previous prime is 64433399. The next prime is 64433449. The reversal of 64433441 is 14433446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33686416 + 30747025 = 5804^2 + 5545^2 .

It is a cyclic number.

It is not a de Polignac number, because 64433441 - 2¹⁴ = 64417057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64433449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32216720 + 32216721.

It is an arithmetic number, because the mean of its divisors is an integer number (32216721).

Almost surely, 2^64433441 is an apocalyptic number.

It is an amenable number.

64433441 is a deficient number, since it is larger than the sum of its proper divisors (1).

64433441 is an equidigital number, since it uses as much as digits as its factorization.

64433441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

The square root of 64433441 is about 8027.0443501952. The cubic root of 64433441 is about 400.9009711870.

Adding to 64433441 its reverse (14433446), we get a palindrome (78866887).

The spelling of 64433441 in words is "sixty-four million, four hundred thirty-three thousand, four hundred forty-one".