65168217 has 12 divisors (see below), whose sum is σ = 95908644. Its totient is φ = 42625440.

The previous prime is 65168171. The next prime is 65168219. The reversal of 65168217 is 71286156.

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 35748441 = 5424^2 + 5979^2 .

It is not a de Polignac number, because 65168217 - 2⁸ = 65167961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65168219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67834 + ... + 68787.

It is an arithmetic number, because the mean of its divisors is an integer number (7992387).

Almost surely, 2^65168217 is an apocalyptic number.

It is an amenable number.

65168217 is a deficient number, since it is larger than the sum of its proper divisors (30740427).

65168217 is a wasteful number, since it uses less digits than its factorization.

65168217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136680 (or 136677 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 65168217 is about 8072.6833828659. The cubic root of 65168217 is about 402.4191255022.

The spelling of 65168217 in words is "sixty-five million, one hundred sixty-eight thousand, two hundred seventeen".