681600463 has 2 divisors, whose sum is σ = 681600464. Its totient is φ = 681600462.

The previous prime is 681600461. The next prime is 681600481. The reversal of 681600463 is 364006186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681600463 - 2¹ = 681600461 is a prime.

Together with 681600461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681600461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340800231 + 340800232.

It is an arithmetic number, because the mean of its divisors is an integer number (340800232).

Almost surely, 2^681600463 is an apocalyptic number.

681600463 is a deficient number, since it is larger than the sum of its proper divisors (1).

681600463 is an equidigital number, since it uses as much as digits as its factorization.

681600463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 681600463 is about 26107.4790625215. The cubic root of 681600463 is about 880.0552922386.

The spelling of 681600463 in words is "six hundred eighty-one million, six hundred thousand, four hundred sixty-three".