2647165663 has 2 divisors, whose sum is σ = 2647165664. Its totient is φ = 2647165662.

The previous prime is 2647165637. The next prime is 2647165687. The reversal of 2647165663 is 3665617462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2647165663 - 2¹⁷ = 2647034591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2647165603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323582831 + 1323582832.

It is an arithmetic number, because the mean of its divisors is an integer number (1323582832).

Almost surely, 2^2647165663 is an apocalyptic number.

2647165663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647165663 is an equidigital number, since it uses as much as digits as its factorization.

2647165663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 46.

The square root of 2647165663 is about 51450.6138252985. The cubic root of 2647165663 is about 1383.3339649422. Note that the first 3 decimals are identical.

The spelling of 2647165663 in words is "two billion, six hundred forty-seven million, one hundred sixty-five thousand, six hundred sixty-three".