609426 has 12 divisors (see below), whose sum is σ = 1320462. Its totient is φ = 203136.

The previous prime is 609421. The next prime is 609437. The reversal of 609426 is 624906.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 301401 = 555^2 + 549^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 609426.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609421) by changing a digit.

609426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16911 + ... + 16946.

2⁶⁰⁹⁴²⁶ is an apocalyptic number.

609426 is an abundant number, since it is smaller than the sum of its proper divisors (711036).

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

609426 is a wasteful number, since it uses less digits than its factorization.

609426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33865 (or 33862 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 609426 is about 780.6574152597. The cubic root of 609426 is about 84.7826511620.

It can be divided in two parts, 609 and 426, that added together give a triangular number (1035 = T₄₅).

The spelling of 609426 in words is "six hundred nine thousand, four hundred twenty-six".