289666616 has 16 divisors (see below), whose sum is σ = 561853800. Its totient is φ = 139838944.

The previous prime is 289666583. The next prime is 289666627. The reversal of 289666616 is 616666982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624050 + ... + 624513.

Almost surely, 2^289666616 is an apocalyptic number.

It is an amenable number.

289666616 is a deficient number, since it is larger than the sum of its proper divisors (272187184).

289666616 is a wasteful number, since it uses less digits than its factorization.

289666616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248598 (or 1248594 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 289666616 is about 17019.5950598127. The cubic root of 289666616 is about 661.6568534041.

The spelling of 289666616 in words is "two hundred eighty-nine million, six hundred sixty-six thousand, six hundred sixteen".