68206018 has 8 divisors (see below), whose sum is σ = 104239548. Its totient is φ = 33459504.

The previous prime is 68206013. The next prime is 68206027. The reversal of 68206018 is 81060286.

It can be written as a sum of positive squares in 2 ways, for example, as 67617729 + 588289 = 8223^2 + 767^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68206013) by changing a digit.

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, 321621 + ... + 321832.

Almost surely, 2^68206018 is an apocalyptic number.

68206018 is a deficient number, since it is larger than the sum of its proper divisors (36033530).

68206018 is a wasteful number, since it uses less digits than its factorization.

68206018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643508.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 68206018 is about 8258.6934802062. The cubic root of 68206018 is about 408.5772977577.

The spelling of 68206018 in words is "sixty-eight million, two hundred six thousand, eighteen".