212616697 has 2 divisors, whose sum is σ = 212616698. Its totient is φ = 212616696.

The previous prime is 212616641. The next prime is 212616709. The reversal of 212616697 is 796616212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196448256 + 16168441 = 14016^2 + 4021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212616697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212616497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106308348 + 106308349.

It is an arithmetic number, because the mean of its divisors is an integer number (106308349).

Almost surely, 2^212616697 is an apocalyptic number.

It is an amenable number.

212616697 is a deficient number, since it is larger than the sum of its proper divisors (1).

212616697 is an equidigital number, since it uses as much as digits as its factorization.

212616697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 212616697 is about 14581.3818618127. The cubic root of 212616697 is about 596.8508119800.

The spelling of 212616697 in words is "two hundred twelve million, six hundred sixteen thousand, six hundred ninety-seven".