64801117 has 2 divisors, whose sum is σ = 64801118. Its totient is φ = 64801116.

The previous prime is 64801081. The next prime is 64801157. The reversal of 64801117 is 71110846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64738116 + 63001 = 8046^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 64801117 - 2¹¹ = 64799069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64801157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32400558 + 32400559.

It is an arithmetic number, because the mean of its divisors is an integer number (32400559).

Almost surely, 2^64801117 is an apocalyptic number.

It is an amenable number.

64801117 is a deficient number, since it is larger than the sum of its proper divisors (1).

64801117 is an equidigital number, since it uses as much as digits as its factorization.

64801117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 64801117 is about 8049.9140989206. The cubic root of 64801117 is about 401.6620779268.

The spelling of 64801117 in words is "sixty-four million, eight hundred one thousand, one hundred seventeen".