65570117 has 2 divisors, whose sum is σ = 65570118. Its totient is φ = 65570116.

The previous prime is 65570093. The next prime is 65570129. The reversal of 65570117 is 71107556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55368481 + 10201636 = 7441^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 65570117 - 2¹⁰ = 65569093 is a prime.

It is a Chen prime.

It is equal to p_3872237 and since 65570117 and 3872237 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65570137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32785058 + 32785059.

It is an arithmetic number, because the mean of its divisors is an integer number (32785059).

Almost surely, 2^65570117 is an apocalyptic number.

It is an amenable number.

65570117 is a deficient number, since it is larger than the sum of its proper divisors (1).

65570117 is an equidigital number, since it uses as much as digits as its factorization.

65570117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 65570117 is about 8097.5377121691. The cubic root of 65570117 is about 403.2446859494.

The spelling of 65570117 in words is "sixty-five million, five hundred seventy thousand, one hundred seventeen".