64324081 has 2 divisors, whose sum is σ = 64324082. Its totient is φ = 64324080.

The previous prime is 64324079. The next prime is 64324097. The reversal of 64324081 is 18042346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44823025 + 19501056 = 6695^2 + 4416^2 .

It is a cyclic number.

It is not a de Polignac number, because 64324081 - 2¹ = 64324079 is a prime.

It is a super-2 number, since 2×64324081² = 8275174792989122, which contains 22 as substring.

Together with 64324079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64324181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32162040 + 32162041.

It is an arithmetic number, because the mean of its divisors is an integer number (32162041).

Almost surely, 2^64324081 is an apocalyptic number.

It is an amenable number.

64324081 is a deficient number, since it is larger than the sum of its proper divisors (1).

64324081 is an equidigital number, since it uses as much as digits as its factorization.

64324081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 64324081 is about 8020.2294854948. The cubic root of 64324081 is about 400.6740323131.

The spelling of 64324081 in words is "sixty-four million, three hundred twenty-four thousand, eighty-one".