97666741 has 2 divisors, whose sum is σ = 97666742. Its totient is φ = 97666740.

The previous prime is 97666733. The next prime is 97666747. The reversal of 97666741 is 14766679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 20666116 = 8775^2 + 4546^2 .

It is an emirp because it is prime and its reverse (14766679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97666741 - 2³ = 97666733 is a prime.

It is a super-2 number, since 2×97666741² = 19077584595122162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97666691 and 97666700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97666747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48833370 + 48833371.

It is an arithmetic number, because the mean of its divisors is an integer number (48833371).

Almost surely, 2^97666741 is an apocalyptic number.

It is an amenable number.

97666741 is a deficient number, since it is larger than the sum of its proper divisors (1).

97666741 is an equidigital number, since it uses as much as digits as its factorization.

97666741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 97666741 is about 9882.6484810500. The cubic root of 97666741 is about 460.5204270540.

The spelling of 97666741 in words is "ninety-seven million, six hundred sixty-six thousand, seven hundred forty-one".