769609 has 4 divisors (see below), whose sum is σ = 772740. Its totient is φ = 766480.

The previous prime is 769597. The next prime is 769619. The reversal of 769609 is 906967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211600 + 558009 = 460^2 + 747^2 .

It is a cyclic number.

It is not a de Polignac number, because 769609 - 2⁵ = 769577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (193185).

2⁷⁶⁹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

769609 is a deficient number, since it is larger than the sum of its proper divisors (3131).

769609 is a wasteful number, since it uses less digits than its factorization.

769609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 769609 is about 877.2736175219. The cubic root of 769609 is about 91.6410477535.

It can be divided in two parts, 769 and 609, that added together give a triangular number (1378 = T₅₂).

The spelling of 769609 in words is "seven hundred sixty-nine thousand, six hundred nine".