68446642 has 16 divisors (see below), whose sum is σ = 112312800. Its totient is φ = 31026240.

The previous prime is 68446603. The next prime is 68446649. The reversal of 68446642 is 24664486.

It is a junction number, because it is equal to n+sod(n) for n = 68446595 and 68446604.

It is not an unprimeable number, because it can be changed into a prime (68446649) 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 7 ways as a sum of consecutive naturals, for example, 4234 + ... + 12442.

It is an arithmetic number, because the mean of its divisors is an integer number (7019550).

Almost surely, 2^68446642 is an apocalyptic number.

68446642 is a deficient number, since it is larger than the sum of its proper divisors (43866158).

68446642 is a wasteful number, since it uses less digits than its factorization.

68446642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8601.

The product of its digits is 221184, while the sum is 40.

The square root of 68446642 is about 8273.2485759827. The cubic root of 68446642 is about 409.0572071032.

The spelling of 68446642 in words is "sixty-eight million, four hundred forty-six thousand, six hundred forty-two".