609665459 has 8 divisors (see below), whose sum is σ = 657209280. Its totient is φ = 562214016.

The previous prime is 609665443. The next prime is 609665471. The reversal of 609665459 is 954566906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609665459 - 2⁴ = 609665443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (609665479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9062 + ... + 36075.

It is an arithmetic number, because the mean of its divisors is an integer number (82151160).

Almost surely, 2^609665459 is an apocalyptic number.

609665459 is a deficient number, since it is larger than the sum of its proper divisors (47543821).

609665459 is a wasteful number, since it uses less digits than its factorization.

609665459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46189.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 609665459 is about 24691.4045570518. The cubic root of 609665459 is about 847.9375412902.

The spelling of 609665459 in words is "six hundred nine million, six hundred sixty-five thousand, four hundred fifty-nine".