609797 has 4 divisors (see below), whose sum is σ = 626316. Its totient is φ = 593280.

The previous prime is 609781. The next prime is 609803. The reversal of 609797 is 797906.

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 410881 + 198916 = 641^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 609797 - 2⁴ = 609781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 609797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609757) 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, 8204 + ... + 8277.

It is an arithmetic number, because the mean of its divisors is an integer number (156579).

2⁶⁰⁹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

609797 is a deficient number, since it is larger than the sum of its proper divisors (16519).

609797 is a wasteful number, since it uses less digits than its factorization.

609797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16518.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 609797 is about 780.8949993437. The cubic root of 609797 is about 84.7998520378.

The spelling of 609797 in words is "six hundred nine thousand, seven hundred ninety-seven".