681419 has 2 divisors, whose sum is σ = 681420. Its totient is φ = 681418.

The previous prime is 681409. The next prime is 681427. The reversal of 681419 is 914186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681419 - 2⁴ = 681403 is a prime.

It is a super-2 number, since 2×681419² = 928663707122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 681391 and 681400.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681419.

It is not a weakly prime, because it can be changed into another prime (681409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340709 + 340710.

It is an arithmetic number, because the mean of its divisors is an integer number (340710).

2⁶⁸¹⁴¹⁹ is an apocalyptic number.

681419 is a deficient number, since it is larger than the sum of its proper divisors (1).

681419 is an equidigital number, since it uses as much as digits as its factorization.

681419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 681419 is about 825.4810718605. The cubic root of 681419 is about 87.9977186048.

The spelling of 681419 in words is "six hundred eighty-one thousand, four hundred nineteen".