660161417 has 2 divisors, whose sum is σ = 660161418. Its totient is φ = 660161416.

The previous prime is 660161371. The next prime is 660161471. The reversal of 660161417 is 714161066.

It is a happy number.

Together with next prime (660161471) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635846656 + 24314761 = 25216^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 660161417 - 2⁶ = 660161353 is a prime.

It is a Chen prime.

It is equal to p_34294172 and since 660161417 and 34294172 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (660161497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330080708 + 330080709.

It is an arithmetic number, because the mean of its divisors is an integer number (330080709).

Almost surely, 2^660161417 is an apocalyptic number.

It is an amenable number.

660161417 is a deficient number, since it is larger than the sum of its proper divisors (1).

660161417 is an equidigital number, since it uses as much as digits as its factorization.

660161417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 660161417 is about 25693.6065393708. The cubic root of 660161417 is about 870.7297426885.

The spelling of 660161417 in words is "six hundred sixty million, one hundred sixty-one thousand, four hundred seventeen".