780836055 has 16 divisors (see below), whose sum is σ = 1256822784. Its totient is φ = 413950880.

The previous prime is 780836053. The next prime is 780836057. The reversal of 780836055 is 550638087.

It is an interprime number because it is at equal distance from previous prime (780836053) and next prime (780836057).

It is not a de Polignac number, because 780836055 - 2¹ = 780836053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780835998 and 780836016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780836053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153351 + ... + 158360.

It is an arithmetic number, because the mean of its divisors is an integer number (78551424).

Almost surely, 2^780836055 is an apocalyptic number.

780836055 is a deficient number, since it is larger than the sum of its proper divisors (475986729).

780836055 is a wasteful number, since it uses less digits than its factorization.

780836055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311886.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 780836055 is about 27943.4438643486. The cubic root of 780836055 is about 920.8451807043.

The spelling of 780836055 in words is "seven hundred eighty million, eight hundred thirty-six thousand, fifty-five".