2164677617 has 2 divisors, whose sum is σ = 2164677618. Its totient is φ = 2164677616.

The previous prime is 2164677611. The next prime is 2164677631. The reversal of 2164677617 is 7167764612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2129914801 + 34762816 = 46151^2 + 5896^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164677617 - 2⁶ = 2164677553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164677611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082338808 + 1082338809.

It is an arithmetic number, because the mean of its divisors is an integer number (1082338809).

Almost surely, 2^2164677617 is an apocalyptic number.

It is an amenable number.

2164677617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164677617 is an equidigital number, since it uses as much as digits as its factorization.

2164677617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 47.

The square root of 2164677617 is about 46526.0960859602. The cubic root of 2164677617 is about 1293.5932542502.

The spelling of 2164677617 in words is "two billion, one hundred sixty-four million, six hundred seventy-seven thousand, six hundred seventeen".