68666616 has 40 divisors (see below), whose sum is σ = 192331920. Its totient is φ = 22888656.

The previous prime is 68666603. The next prime is 68666629. The reversal of 68666616 is 61666686.

It is an interprime number because it is at equal distance from previous prime (68666603) and next prime (68666629).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52336 + ... + 53631.

It is an arithmetic number, because the mean of its divisors is an integer number (4808298).

Almost surely, 2^68666616 is an apocalyptic number.

It is an amenable number.

68666616 is an abundant number, since it is smaller than the sum of its proper divisors (123665304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68666616 is a wasteful number, since it uses less digits than its factorization.

68666616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105985 (or 105972 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 68666616 is about 8286.5322059351. The cubic root of 68666616 is about 409.4949482128.

The spelling of 68666616 in words is "sixty-eight million, six hundred sixty-six thousand, six hundred sixteen".