609569501 has 4 divisors (see below), whose sum is σ = 609643104. Its totient is φ = 609495900.

The previous prime is 609569407. The next prime is 609569507. The reversal of 609569501 is 105965906.

609569501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 609569501 - 2¹⁸ = 609307357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609569507) 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, 22535 + ... + 41556.

It is an arithmetic number, because the mean of its divisors is an integer number (152410776).

Almost surely, 2^609569501 is an apocalyptic number.

It is an amenable number.

609569501 is a deficient number, since it is larger than the sum of its proper divisors (73603).

609569501 is an equidigital number, since it uses as much as digits as its factorization.

609569501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73602.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 609569501 is about 24689.4613347477. The cubic root of 609569501 is about 847.8930520496.

The spelling of 609569501 in words is "six hundred nine million, five hundred sixty-nine thousand, five hundred one".