616805889 has 32 divisors (see below), whose sum is σ = 971418624. Its totient is φ = 340804800.

The previous prime is 616805879. The next prime is 616805909. The reversal of 616805889 is 988508616.

It is not a de Polignac number, because 616805889 - 2¹¹ = 616803841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616805869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87822 + ... + 94584.

It is an arithmetic number, because the mean of its divisors is an integer number (30356832).

Almost surely, 2^616805889 is an apocalyptic number.

It is an amenable number.

616805889 is a deficient number, since it is larger than the sum of its proper divisors (354612735).

616805889 is a wasteful number, since it uses less digits than its factorization.

616805889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917.

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 616805889 is about 24835.5770820813. The cubic root of 616805889 is about 851.2350622377.

The spelling of 616805889 in words is "six hundred sixteen million, eight hundred five thousand, eight hundred eighty-nine".