609320709 has 36 divisors (see below), whose sum is σ = 935284896. Its totient is φ = 382189104.

The previous prime is 609320683. The next prime is 609320731. The reversal of 609320709 is 907023906.

It is not a de Polignac number, because 609320709 - 2¹² = 609316613 is a prime.

It is a super-4 number, since 4×609320709⁴ (a number of 36 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609320609) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 542022 + ... + 543144.

It is an arithmetic number, because the mean of its divisors is an integer number (25980136).

Almost surely, 2^609320709 is an apocalyptic number.

It is an amenable number.

609320709 is a deficient number, since it is larger than the sum of its proper divisors (325964187).

609320709 is a wasteful number, since it uses less digits than its factorization.

609320709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 609320709 is about 24684.4223955109. The cubic root of 609320709 is about 847.7776822608. Note that the first 3 decimals are identical.

The spelling of 609320709 in words is "six hundred nine million, three hundred twenty thousand, seven hundred nine".