770985 has 16 divisors (see below), whose sum is σ = 1370880. Its totient is φ = 411120.

The previous prime is 770981. The next prime is 770993. The reversal of 770985 is 589077.

It is not a de Polignac number, because 770985 - 2² = 770981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (770981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2721 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (85680).

2⁷⁷⁰⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

770985 is a deficient number, since it is larger than the sum of its proper divisors (599895).

770985 is a wasteful number, since it uses less digits than its factorization.

770985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 770985 is about 878.0575152005. The cubic root of 770985 is about 91.6956308838.

The spelling of 770985 in words is "seven hundred seventy thousand, nine hundred eighty-five".