780555343 has 2 divisors, whose sum is σ = 780555344. Its totient is φ = 780555342.

The previous prime is 780555317. The next prime is 780555401. The reversal of 780555343 is 343555087.

780555343 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 an emirp because it is prime and its reverse (343555087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 780555343 - 2⁵ = 780555311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780555296 and 780555305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780555143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390277671 + 390277672.

It is an arithmetic number, because the mean of its divisors is an integer number (390277672).

Almost surely, 2^780555343 is an apocalyptic number.

780555343 is a deficient number, since it is larger than the sum of its proper divisors (1).

780555343 is an equidigital number, since it uses as much as digits as its factorization.

780555343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 780555343 is about 27938.4205530663. The cubic root of 780555343 is about 920.7348189653.

The spelling of 780555343 in words is "seven hundred eighty million, five hundred fifty-five thousand, three hundred forty-three".