616666055 has 8 divisors (see below), whose sum is σ = 741865632. Its totient is φ = 492088608.

The previous prime is 616666009. The next prime is 616666067. The reversal of 616666055 is 550666616.

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

It is a cyclic number.

It is not a de Polignac number, because 616666055 - 2¹² = 616661959 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 153347 + ... + 157316.

It is an arithmetic number, because the mean of its divisors is an integer number (92733204).

Almost surely, 2^616666055 is an apocalyptic number.

616666055 is a deficient number, since it is larger than the sum of its proper divisors (125199577).

616666055 is a wasteful number, since it uses less digits than its factorization.

616666055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311065.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 616666055 is about 24832.7617272022. The cubic root of 616666055 is about 851.1707304914.

The spelling of 616666055 in words is "six hundred sixteen million, six hundred sixty-six thousand, fifty-five".