616669617 has 8 divisors (see below), whose sum is σ = 833489824. Its totient is φ = 405481248.

The previous prime is 616669609. The next prime is 616669631. The reversal of 616669617 is 716966616.

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

It is not a de Polignac number, because 616669617 - 2³ = 616669609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616669607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407703 + ... + 1408140.

It is an arithmetic number, because the mean of its divisors is an integer number (104186228).

Almost surely, 2^616669617 is an apocalyptic number.

It is an amenable number.

616669617 is a deficient number, since it is larger than the sum of its proper divisors (216820207).

616669617 is a wasteful number, since it uses less digits than its factorization.

616669617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815919.

The product of its digits is 489888, while the sum is 48.

The square root of 616669617 is about 24832.8334468703. The cubic root of 616669617 is about 851.1723693386.

The spelling of 616669617 in words is "six hundred sixteen million, six hundred sixty-nine thousand, six hundred seventeen".