64258081 has 2 divisors, whose sum is σ = 64258082. Its totient is φ = 64258080.

The previous prime is 64258049. The next prime is 64258091. The reversal of 64258081 is 18085246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 11840481 = 7240^2 + 3441^2 .

It is a cyclic number.

It is not a de Polignac number, because 64258081 - 2⁵ = 64258049 is a prime.

It is a super-2 number, since 2×64258081² = 8258201947605122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64258091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32129040 + 32129041.

It is an arithmetic number, because the mean of its divisors is an integer number (32129041).

Almost surely, 2^64258081 is an apocalyptic number.

It is an amenable number.

64258081 is a deficient number, since it is larger than the sum of its proper divisors (1).

64258081 is an equidigital number, since it uses as much as digits as its factorization.

64258081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 64258081 is about 8016.1138340221. The cubic root of 64258081 is about 400.5369476455.

The spelling of 64258081 in words is "sixty-four million, two hundred fifty-eight thousand, eighty-one".