64115089 has 2 divisors, whose sum is σ = 64115090. Its totient is φ = 64115088.

The previous prime is 64115083. The next prime is 64115111. The reversal of 64115089 is 98051146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46348864 + 17766225 = 6808^2 + 4215^2 .

It is a cyclic number.

It is not a de Polignac number, because 64115089 - 2³ = 64115081 is a prime.

It is a super-2 number, since 2×64115089² = 8221489274955842, which contains 22 as substring.

It is equal to p_3791491 and since 64115089 and 3791491 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64115081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32057544 + 32057545.

It is an arithmetic number, because the mean of its divisors is an integer number (32057545).

Almost surely, 2^64115089 is an apocalyptic number.

It is an amenable number.

64115089 is a deficient number, since it is larger than the sum of its proper divisors (1).

64115089 is an equidigital number, since it uses as much as digits as its factorization.

64115089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 64115089 is about 8007.1898316451. The cubic root of 64115089 is about 400.2396251708.

The spelling of 64115089 in words is "sixty-four million, one hundred fifteen thousand, eighty-nine".