97666279 has 2 divisors, whose sum is σ = 97666280. Its totient is φ = 97666278.

The previous prime is 97666259. The next prime is 97666313. The reversal of 97666279 is 97266679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97666279 - 2¹⁵ = 97633511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97666259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48833139 + 48833140.

It is an arithmetic number, because the mean of its divisors is an integer number (48833140).

Almost surely, 2^97666279 is an apocalyptic number.

97666279 is a deficient number, since it is larger than the sum of its proper divisors (1).

97666279 is an equidigital number, since it uses as much as digits as its factorization.

97666279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 52.

The square root of 97666279 is about 9882.6251067214. The cubic root of 97666279 is about 460.5197009086.

The spelling of 97666279 in words is "ninety-seven million, six hundred sixty-six thousand, two hundred seventy-nine".