616301666 has 8 divisors (see below), whose sum is σ = 939607644. Its totient is φ = 303099120.

The previous prime is 616301659. The next prime is 616301701. The reversal of 616301666 is 666103616.

It can be written as a sum of positive squares in 2 ways, for example, as 523082641 + 93219025 = 22871^2 + 9655^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525705 + ... + 2525948.

Almost surely, 2^616301666 is an apocalyptic number.

616301666 is a deficient number, since it is larger than the sum of its proper divisors (323305978).

616301666 is a wasteful number, since it uses less digits than its factorization.

616301666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051716.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 616301666 is about 24825.4237828884. The cubic root of 616301666 is about 851.0030447239.

The spelling of 616301666 in words is "six hundred sixteen million, three hundred one thousand, six hundred sixty-six".