212766461 has 2 divisors, whose sum is σ = 212766462. Its totient is φ = 212766460.

The previous prime is 212766413. The next prime is 212766479. The reversal of 212766461 is 164667212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207504025 + 5262436 = 14405^2 + 2294^2 .

It is a cyclic number.

It is not a de Polignac number, because 212766461 - 2²² = 208572157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212766061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106383230 + 106383231.

It is an arithmetic number, because the mean of its divisors is an integer number (106383231).

Almost surely, 2^212766461 is an apocalyptic number.

It is an amenable number.

212766461 is a deficient number, since it is larger than the sum of its proper divisors (1).

212766461 is an equidigital number, since it uses as much as digits as its factorization.

212766461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 212766461 is about 14586.5164107130. The cubic root of 212766461 is about 596.9909166643.

The spelling of 212766461 in words is "two hundred twelve million, seven hundred sixty-six thousand, four hundred sixty-one".