68447018 has 8 divisors (see below), whose sum is σ = 106210980. Its totient is φ = 33043360.

The previous prime is 68447017. The next prime is 68447033. The reversal of 68447018 is 81074486.

It can be written as a sum of positive squares in 2 ways, for example, as 68442529 + 4489 = 8273^2 + 67^2 .

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 (68447017) 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, 590003 + ... + 590118.

Almost surely, 2^68447018 is an apocalyptic number.

68447018 is a deficient number, since it is larger than the sum of its proper divisors (37763962).

68447018 is a wasteful number, since it uses less digits than its factorization.

68447018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180152.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 68447018 is about 8273.2712997943. The cubic root of 68447018 is about 409.0579561305.

The spelling of 68447018 in words is "sixty-eight million, four hundred forty-seven thousand, eighteen".