6609626398 has 8 divisors (see below), whose sum is σ = 9946319760. Its totient is φ = 3294186480.

The previous prime is 6609626389. The next prime is 6609626411. The reversal of 6609626398 is 8936269066.

It is a happy number.

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

It is a super-2 number, since 2×6609626398² = 87374322242276908808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5312583 + ... + 5313826.

It is an arithmetic number, because the mean of its divisors is an integer number (1243289970).

Almost surely, 2^6609626398 is an apocalyptic number.

6609626398 is a deficient number, since it is larger than the sum of its proper divisors (3336693362).

6609626398 is a wasteful number, since it uses less digits than its factorization.

6609626398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10626722.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The square root of 6609626398 is about 81299.6088428475. The cubic root of 6609626398 is about 1876.6889810476.

The spelling of 6609626398 in words is "six billion, six hundred nine million, six hundred twenty-six thousand, three hundred ninety-eight".