682221461 has 2 divisors, whose sum is σ = 682221462. Its totient is φ = 682221460.

The previous prime is 682221451. The next prime is 682221523. The reversal of 682221461 is 164122286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543123025 + 139098436 = 23305^2 + 11794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-682221461 is a prime.

It is a super-2 number, since 2×682221461² = 930852243697949042, which contains 22 as substring.

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 (682221451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341110730 + 341110731.

It is an arithmetic number, because the mean of its divisors is an integer number (341110731).

Almost surely, 2^682221461 is an apocalyptic number.

It is an amenable number.

682221461 is a deficient number, since it is larger than the sum of its proper divisors (1).

682221461 is an equidigital number, since it uses as much as digits as its factorization.

682221461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 682221461 is about 26119.3694602301. The cubic root of 682221461 is about 880.3224803820.

The spelling of 682221461 in words is "six hundred eighty-two million, two hundred twenty-one thousand, four hundred sixty-one".