3666545279 has 2 divisors, whose sum is σ = 3666545280. Its totient is φ = 3666545278.

The previous prime is 3666545263. The next prime is 3666545297. The reversal of 3666545279 is 9725456663.

Together with next prime (3666545297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3666545279 - 2⁴ = 3666545263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3666545279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3666545209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833272639 + 1833272640.

It is an arithmetic number, because the mean of its divisors is an integer number (1833272640).

Almost surely, 2^3666545279 is an apocalyptic number.

3666545279 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666545279 is an equidigital number, since it uses as much as digits as its factorization.

3666545279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 53.

The square root of 3666545279 is about 60552.0047479850. The cubic root of 3666545279 is about 1542.0046529568.

The spelling of 3666545279 in words is "three billion, six hundred sixty-six million, five hundred forty-five thousand, two hundred seventy-nine".