68642186 has 8 divisors (see below), whose sum is σ = 103075524. Its totient is φ = 34283680.

The previous prime is 68642173. The next prime is 68642201. The reversal of 68642186 is 68124686.

It can be written as a sum of positive squares in 2 ways, for example, as 68641225 + 961 = 8285^2 + 31^2 .

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

It is a Curzon 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, 16355 + ... + 20118.

Almost surely, 2^68642186 is an apocalyptic number.

68642186 is a deficient number, since it is larger than the sum of its proper divisors (34433338).

68642186 is a wasteful number, since it uses less digits than its factorization.

68642186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37416.

The product of its digits is 110592, while the sum is 41.

The square root of 68642186 is about 8285.0579961760. The cubic root of 68642186 is about 409.4463794964.

The spelling of 68642186 in words is "sixty-eight million, six hundred forty-two thousand, one hundred eighty-six".