616661326 has 8 divisors (see below), whose sum is σ = 965209104. Its totient is φ = 294924960.

The previous prime is 616661317. The next prime is 616661329. The reversal of 616661326 is 623166616.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616661329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6702795 + ... + 6702886.

It is an arithmetic number, because the mean of its divisors is an integer number (120651138).

Almost surely, 2^616661326 is an apocalyptic number.

616661326 is a deficient number, since it is larger than the sum of its proper divisors (348547778).

616661326 is a wasteful number, since it uses less digits than its factorization.

616661326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13405706.

The product of its digits is 46656, while the sum is 37.

The square root of 616661326 is about 24832.6665100629. Note that the first 3 decimals coincide. The cubic root of 616661326 is about 851.1685547073.

The spelling of 616661326 in words is "six hundred sixteen million, six hundred sixty-one thousand, three hundred twenty-six".