64516169 has 2 divisors, whose sum is σ = 64516170. Its totient is φ = 64516168.

The previous prime is 64516163. The next prime is 64516181. The reversal of 64516169 is 96161546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 3097600 = 7837^2 + 1760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64516169 is a prime.

It is a super-2 number, since 2×64516169² = 8324672124873122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64516163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32258084 + 32258085.

It is an arithmetic number, because the mean of its divisors is an integer number (32258085).

Almost surely, 2^64516169 is an apocalyptic number.

It is an amenable number.

64516169 is a deficient number, since it is larger than the sum of its proper divisors (1).

64516169 is an equidigital number, since it uses as much as digits as its factorization.

64516169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 64516169 is about 8032.1957769965. The cubic root of 64516169 is about 401.0724740121.

It can be divided in two parts, 64516 and 169, that multiplied together give a square (10903204 = 3302²).

The spelling of 64516169 in words is "sixty-four million, five hundred sixteen thousand, one hundred sixty-nine".