102668161 has 2 divisors, whose sum is σ = 102668162. Its totient is φ = 102668160.

The previous prime is 102668131. The next prime is 102668171. The reversal of 102668161 is 161866201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82011136 + 20657025 = 9056^2 + 4545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102668161 is a prime.

It is a super-4 number, since 4×102668161⁴ (a number of 33 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (102668101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51334080 + 51334081.

It is an arithmetic number, because the mean of its divisors is an integer number (51334081).

Almost surely, 2^102668161 is an apocalyptic number.

It is an amenable number.

102668161 is a deficient number, since it is larger than the sum of its proper divisors (1).

102668161 is an equidigital number, since it uses as much as digits as its factorization.

102668161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 102668161 is about 10132.5298420483. The cubic root of 102668161 is about 468.2508714743.

The spelling of 102668161 in words is "one hundred two million, six hundred sixty-eight thousand, one hundred sixty-one".