1077857785 has 8 divisors (see below), whose sum is σ = 1298203776. Its totient is φ = 859103280.

The previous prime is 1077857777. The next prime is 1077857801. The reversal of 1077857785 is 5877587701.

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

It is not a de Polignac number, because 1077857785 - 2³ = 1077857777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 396379 + ... + 399088.

It is an arithmetic number, because the mean of its divisors is an integer number (162275472).

Almost surely, 2^1077857785 is an apocalyptic number.

It is an amenable number.

1077857785 is a deficient number, since it is larger than the sum of its proper divisors (220345991).

1077857785 is an equidigital number, since it uses as much as digits as its factorization.

1077857785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795743.

The product of its (nonzero) digits is 3841600, while the sum is 55.

The square root of 1077857785 is about 32830.7445087680. The cubic root of 1077857785 is about 1025.3067604545.

The spelling of 1077857785 in words is "one billion, seventy-seven million, eight hundred fifty-seven thousand, seven hundred eighty-five".