66614101 has 2 divisors, whose sum is σ = 66614102. Its totient is φ = 66614100.

The previous prime is 66614077. The next prime is 66614111. The reversal of 66614101 is 10141666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57608100 + 9006001 = 7590^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 66614101 - 2¹⁹ = 66089813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66614111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33307050 + 33307051.

It is an arithmetic number, because the mean of its divisors is an integer number (33307051).

Almost surely, 2^66614101 is an apocalyptic number.

It is an amenable number.

66614101 is a deficient number, since it is larger than the sum of its proper divisors (1).

66614101 is an equidigital number, since it uses as much as digits as its factorization.

66614101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66614101 is about 8161.7461979652. The cubic root of 66614101 is about 405.3735333483.

Adding to 66614101 its reverse (10141666), we get a palindrome (76755767).

The spelling of 66614101 in words is "sixty-six million, six hundred fourteen thousand, one hundred one".