785781055 has 8 divisors (see below), whose sum is σ = 998404272. Its totient is φ = 591646848.

The previous prime is 785781053. The next prime is 785781107. The reversal of 785781055 is 550187587.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 785781055 - 2¹ = 785781053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 785780996 and 785781014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785781053) 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 7 ways as a sum of consecutive naturals, for example, 4622157 + ... + 4622326.

It is an arithmetic number, because the mean of its divisors is an integer number (124800534).

Almost surely, 2^785781055 is an apocalyptic number.

785781055 is a deficient number, since it is larger than the sum of its proper divisors (212623217).

785781055 is a wasteful number, since it uses less digits than its factorization.

785781055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244505.

The product of its (nonzero) digits is 392000, while the sum is 46.

The square root of 785781055 is about 28031.7865110307. The cubic root of 785781055 is about 922.7849820785.

The spelling of 785781055 in words is "seven hundred eighty-five million, seven hundred eighty-one thousand, fifty-five".