770861 has 16 divisors (see below), whose sum is σ = 975744. Its totient is φ = 592704.

The previous prime is 770843. The next prime is 770863. The reversal of 770861 is 168077.

It is not a de Polignac number, because 770861 - 2¹⁰ = 769837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770863) 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, 3815 + ... + 4011.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2⁷⁷⁰⁸⁶¹ is an apocalyptic number.

It is an amenable number.

770861 is a deficient number, since it is larger than the sum of its proper divisors (204883).

770861 is a wasteful number, since it uses less digits than its factorization.

770861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 770861 is about 877.9869019524. The cubic root of 770861 is about 91.6907147191.

The spelling of 770861 in words is "seven hundred seventy thousand, eight hundred sixty-one".