780011077 has 2 divisors, whose sum is σ = 780011078. Its totient is φ = 780011076.

The previous prime is 780011053. The next prime is 780011117. The reversal of 780011077 is 770110087.

780011077 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 can be written as a sum of positive squares in only one way, i.e., 776792641 + 3218436 = 27871^2 + 1794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-780011077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780011027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390005538 + 390005539.

It is an arithmetic number, because the mean of its divisors is an integer number (390005539).

Almost surely, 2^780011077 is an apocalyptic number.

It is an amenable number.

780011077 is a deficient number, since it is larger than the sum of its proper divisors (1).

780011077 is an equidigital number, since it uses as much as digits as its factorization.

780011077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 31.

The square root of 780011077 is about 27928.6783969453. The cubic root of 780011077 is about 920.5207657353.

The spelling of 780011077 in words is "seven hundred eighty million, eleven thousand, seventy-seven".