6609897842 has 8 divisors (see below), whose sum is σ = 9955987932. Its totient is φ = 3291235200.

The previous prime is 6609897839. The next prime is 6609897871. The reversal of 6609897842 is 2487989066.

It can be written as a sum of positive squares in 2 ways, for example, as 5391818041 + 1218079801 = 73429^2 + 34901^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6856259 + ... + 6857222.

Almost surely, 2^6609897842 is an apocalyptic number.

6609897842 is a deficient number, since it is larger than the sum of its proper divisors (3346090090).

6609897842 is a wasteful number, since it uses less digits than its factorization.

6609897842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13713724.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The square root of 6609897842 is about 81301.2782310340. The cubic root of 6609897842 is about 1876.7146713040.

The spelling of 6609897842 in words is "six billion, six hundred nine million, eight hundred ninety-seven thousand, eight hundred forty-two".