616115666 has 16 divisors (see below), whose sum is σ = 980605440. Its totient is φ = 289323840.

The previous prime is 616115659. The next prime is 616115671. The reversal of 616115666 is 666511616.

It is a happy number.

616115666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630 + ... + 35201.

It is an arithmetic number, because the mean of its divisors is an integer number (61287840).

Almost surely, 2^616115666 is an apocalyptic number.

616115666 is a deficient number, since it is larger than the sum of its proper divisors (364489774).

616115666 is a wasteful number, since it uses less digits than its factorization.

616115666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38329.

The product of its digits is 38880, while the sum is 38.

The square root of 616115666 is about 24821.6773405828. The cubic root of 616115666 is about 850.9174251314.

The spelling of 616115666 in words is "six hundred sixteen million, one hundred fifteen thousand, six hundred sixty-six".