64080817 has 2 divisors, whose sum is σ = 64080818. Its totient is φ = 64080816.

The previous prime is 64080799. The next prime is 64080823. The reversal of 64080817 is 71808046.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52548001 + 11532816 = 7249^2 + 3396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64080817 is a prime.

It is a super-2 number, since 2×64080817² = 8212702214774978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64080857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32040408 + 32040409.

It is an arithmetic number, because the mean of its divisors is an integer number (32040409).

Almost surely, 2^64080817 is an apocalyptic number.

It is an amenable number.

64080817 is a deficient number, since it is larger than the sum of its proper divisors (1).

64080817 is an equidigital number, since it uses as much as digits as its factorization.

64080817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 64080817 is about 8005.0494689290. The cubic root of 64080817 is about 400.1682979296.

The spelling of 64080817 in words is "sixty-four million, eighty thousand, eight hundred seventeen".