769221 has 6 divisors (see below), whose sum is σ = 1111110. Its totient is φ = 512808.

The previous prime is 769207. The next prime is 769231. The reversal of 769221 is 122967.

It can be written as a sum of positive squares in only one way, i.e., 756900 + 12321 = 870^2 + 111^2 .

It is not a de Polignac number, because 769221 - 2¹⁰ = 768197 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 769221.

It is not an unprimeable number, because it can be changed into a prime (769231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42726 + ... + 42743.

It is an arithmetic number, because the mean of its divisors is an integer number (185185).

2⁷⁶⁹²²¹ is an apocalyptic number.

It is an amenable number.

769221 is a deficient number, since it is larger than the sum of its proper divisors (341889).

769221 is a wasteful number, since it uses less digits than its factorization.

769221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85475 (or 85472 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 769221 is about 877.0524499709. The cubic root of 769221 is about 91.6256448222.

It can be divided in two parts, 769 and 221, that added together give a triangular number (990 = T₄₄).

The spelling of 769221 in words is "seven hundred sixty-nine thousand, two hundred twenty-one".