64816441 has 2 divisors, whose sum is σ = 64816442. Its totient is φ = 64816440.

The previous prime is 64816417. The next prime is 64816459. The reversal of 64816441 is 14461846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52142841 + 12673600 = 7221^2 + 3560^2 .

It is a cyclic number.

It is not a de Polignac number, because 64816441 - 2⁷ = 64816313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64816397 and 64816406.

It is not a weakly prime, because it can be changed into another prime (64816471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32408220 + 32408221.

It is an arithmetic number, because the mean of its divisors is an integer number (32408221).

Almost surely, 2^64816441 is an apocalyptic number.

It is an amenable number.

64816441 is a deficient number, since it is larger than the sum of its proper divisors (1).

64816441 is an equidigital number, since it uses as much as digits as its factorization.

64816441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 64816441 is about 8050.8658540557. The cubic root of 64816441 is about 401.6937367667.

The spelling of 64816441 in words is "sixty-four million, eight hundred sixteen thousand, four hundred forty-one".