68705144 has 8 divisors (see below), whose sum is σ = 128822160. Its totient is φ = 34352568.

The previous prime is 68705137. The next prime is 68705167. The reversal of 68705144 is 44150786.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4294064 + ... + 4294079.

It is an arithmetic number, because the mean of its divisors is an integer number (16102770).

Almost surely, 2^68705144 is an apocalyptic number.

It is an amenable number.

68705144 is a deficient number, since it is larger than the sum of its proper divisors (60117016).

68705144 is a wasteful number, since it uses less digits than its factorization.

68705144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8588149 (or 8588145 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 68705144 is about 8288.8566159634. The cubic root of 68705144 is about 409.5715214321.

The spelling of 68705144 in words is "sixty-eight million, seven hundred five thousand, one hundred forty-four".