769820 has 24 divisors (see below), whose sum is σ = 1645728. Its totient is φ = 302400.

The previous prime is 769807. The next prime is 769837. The reversal of 769820 is 28967.

It is a congruent number.

It is an unprimeable number.

769820 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905 + ... + 1535.

It is an arithmetic number, because the mean of its divisors is an integer number (68572).

2⁷⁶⁹⁸²⁰ is an apocalyptic number.

It is an amenable number.

769820 is an abundant number, since it is smaller than the sum of its proper divisors (875908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

769820 is a wasteful number, since it uses less digits than its factorization.

769820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 769820 is about 877.3938682257. The cubic root of 769820 is about 91.6494219167.

The spelling of 769820 in words is "seven hundred sixty-nine thousand, eight hundred twenty".