780068833 has 2 divisors, whose sum is σ = 780068834. Its totient is φ = 780068832.

The previous prime is 780068827. The next prime is 780068867. The reversal of 780068833 is 338860087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539725824 + 240343009 = 23232^2 + 15503^2 .

It is a cyclic number.

It is not a de Polignac number, because 780068833 - 2⁵ = 780068801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 780068833.

It is not a weakly prime, because it can be changed into another prime (780068533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390034416 + 390034417.

It is an arithmetic number, because the mean of its divisors is an integer number (390034417).

Almost surely, 2^780068833 is an apocalyptic number.

It is an amenable number.

780068833 is a deficient number, since it is larger than the sum of its proper divisors (1).

780068833 is an equidigital number, since it uses as much as digits as its factorization.

780068833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 780068833 is about 27929.7123687302. The cubic root of 780068833 is about 920.5434851927.

The spelling of 780068833 in words is "seven hundred eighty million, sixty-eight thousand, eight hundred thirty-three".