616993089 has 4 divisors (see below), whose sum is σ = 822657456. Its totient is φ = 411328724.

The previous prime is 616993021. The next prime is 616993103. The reversal of 616993089 is 980399616.

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 616993089 - 2¹² = 616988993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616993889) 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, 102832179 + ... + 102832184.

It is an arithmetic number, because the mean of its divisors is an integer number (205664364).

Almost surely, 2^616993089 is an apocalyptic number.

It is an amenable number.

616993089 is a deficient number, since it is larger than the sum of its proper divisors (205664367).

616993089 is a wasteful number, since it uses less digits than its factorization.

616993089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205664366.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 616993089 is about 24839.3455831670. The cubic root of 616993089 is about 851.3211698708.

The spelling of 616993089 in words is "six hundred sixteen million, nine hundred ninety-three thousand, eighty-nine".