1663676111 has 2 divisors, whose sum is σ = 1663676112. Its totient is φ = 1663676110.

The previous prime is 1663676107. The next prime is 1663676123. The reversal of 1663676111 is 1116763661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1663676111 - 2² = 1663676107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663676191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831838055 + 831838056.

It is an arithmetic number, because the mean of its divisors is an integer number (831838056).

Almost surely, 2^1663676111 is an apocalyptic number.

1663676111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663676111 is an equidigital number, since it uses as much as digits as its factorization.

1663676111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 1663676111 is about 40788.1859243580. The cubic root of 1663676111 is about 1184.9215377675.

The spelling of 1663676111 in words is "one billion, six hundred sixty-three million, six hundred seventy-six thousand, one hundred eleven".