17664061 has 2 divisors, whose sum is σ = 17664062. Its totient is φ = 17664060.

The previous prime is 17663993. The next prime is 17664067. The reversal of 17664061 is 16046671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13461561 + 4202500 = 3669^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 17664061 - 2⁹ = 17663549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17664067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8832030 + 8832031.

It is an arithmetic number, because the mean of its divisors is an integer number (8832031).

Almost surely, 2^17664061 is an apocalyptic number.

It is an amenable number.

17664061 is a deficient number, since it is larger than the sum of its proper divisors (1).

17664061 is an equidigital number, since it uses as much as digits as its factorization.

17664061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 17664061 is about 4202.8634286638. The cubic root of 17664061 is about 260.4335026498.

The spelling of 17664061 in words is "seventeen million, six hundred sixty-four thousand, sixty-one".