780085597 has 2 divisors, whose sum is σ = 780085598. Its totient is φ = 780085596.

The previous prime is 780085573. The next prime is 780085601. The reversal of 780085597 is 795580087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 725709721 + 54375876 = 26939^2 + 7374^2 .

It is an emirp because it is prime and its reverse (795580087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 780085597 - 2⁷ = 780085469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 780085597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780085567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390042798 + 390042799.

It is an arithmetic number, because the mean of its divisors is an integer number (390042799).

Almost surely, 2^780085597 is an apocalyptic number.

It is an amenable number.

780085597 is a deficient number, since it is larger than the sum of its proper divisors (1).

780085597 is an equidigital number, since it uses as much as digits as its factorization.

780085597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 780085597 is about 27930.0124776198. The cubic root of 780085597 is about 920.5500794315.

The spelling of 780085597 in words is "seven hundred eighty million, eighty-five thousand, five hundred ninety-seven".