216674677 has 2 divisors, whose sum is σ = 216674678. Its totient is φ = 216674676.

The previous prime is 216674659. The next prime is 216674681. The reversal of 216674677 is 776476612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169806961 + 46867716 = 13031^2 + 6846^2 .

It is a cyclic number.

It is not a de Polignac number, because 216674677 - 2²⁷ = 82456949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216674617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108337338 + 108337339.

It is an arithmetic number, because the mean of its divisors is an integer number (108337339).

Almost surely, 2^216674677 is an apocalyptic number.

It is an amenable number.

216674677 is a deficient number, since it is larger than the sum of its proper divisors (1).

216674677 is an equidigital number, since it uses as much as digits as its factorization.

216674677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 46.

The square root of 216674677 is about 14719.8735388590. The cubic root of 216674677 is about 600.6240516335.

The spelling of 216674677 in words is "two hundred sixteen million, six hundred seventy-four thousand, six hundred seventy-seven".