216273877 has 2 divisors, whose sum is σ = 216273878. Its totient is φ = 216273876.

The previous prime is 216273859. The next prime is 216273913. The reversal of 216273877 is 778372612.

216273877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118679236 + 97594641 = 10894^2 + 9879^2 .

It is a cyclic number.

It is not a de Polignac number, because 216273877 - 2⁷ = 216273749 is a prime.

It is a super-2 number, since 2×216273877² = 93548779745222258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216273077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108136938 + 108136939.

It is an arithmetic number, because the mean of its divisors is an integer number (108136939).

Almost surely, 2^216273877 is an apocalyptic number.

It is an amenable number.

216273877 is a deficient number, since it is larger than the sum of its proper divisors (1).

216273877 is an equidigital number, since it uses as much as digits as its factorization.

216273877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 43.

The square root of 216273877 is about 14706.2529898000. The cubic root of 216273877 is about 600.2534827106.

The spelling of 216273877 in words is "two hundred sixteen million, two hundred seventy-three thousand, eight hundred seventy-seven".