216675583 has 2 divisors, whose sum is σ = 216675584. Its totient is φ = 216675582.

The previous prime is 216675491. The next prime is 216675619. The reversal of 216675583 is 385576612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216675583 - 2¹³ = 216667391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216670583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108337791 + 108337792.

It is an arithmetic number, because the mean of its divisors is an integer number (108337792).

Almost surely, 2^216675583 is an apocalyptic number.

216675583 is a deficient number, since it is larger than the sum of its proper divisors (1).

216675583 is an equidigital number, since it uses as much as digits as its factorization.

216675583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 216675583 is about 14719.9043135477. The cubic root of 216675583 is about 600.6248887789.

The spelling of 216675583 in words is "two hundred sixteen million, six hundred seventy-five thousand, five hundred eighty-three".