680654419 has 2 divisors, whose sum is σ = 680654420. Its totient is φ = 680654418.

The previous prime is 680654417. The next prime is 680654431. The reversal of 680654419 is 914456086.

680654419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680654419 - 2¹ = 680654417 is a prime.

It is a super-2 number, since 2×680654419² = 926580876208455122, which contains 22 as substring.

Together with 680654417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (680654413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340327209 + 340327210.

It is an arithmetic number, because the mean of its divisors is an integer number (340327210).

Almost surely, 2^680654419 is an apocalyptic number.

680654419 is a deficient number, since it is larger than the sum of its proper divisors (1).

680654419 is an equidigital number, since it uses as much as digits as its factorization.

680654419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 680654419 is about 26089.3545148208. The cubic root of 680654419 is about 879.6479389737.

The spelling of 680654419 in words is "six hundred eighty million, six hundred fifty-four thousand, four hundred nineteen".