68063644 has 12 divisors (see below), whose sum is σ = 129939768. Its totient is φ = 30938000.

The previous prime is 68063641. The next prime is 68063651. The reversal of 68063644 is 44636086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68063641) 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, 773407 + ... + 773494.

It is an arithmetic number, because the mean of its divisors is an integer number (10828314).

Almost surely, 2^68063644 is an apocalyptic number.

It is an amenable number.

68063644 is a deficient number, since it is larger than the sum of its proper divisors (61876124).

68063644 is a wasteful number, since it uses less digits than its factorization.

68063644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546916 (or 1546914 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 68063644 is about 8250.0693330420. The cubic root of 68063644 is about 408.2928101208.

The spelling of 68063644 in words is "sixty-eight million, sixty-three thousand, six hundred forty-four".