68195712 has 128 divisors (see below), whose sum is σ = 205632000. Its totient is φ = 19851264.

The previous prime is 68195711. The next prime is 68195747. The reversal of 68195712 is 21759186.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (30240) is a multiple of the sum of its prime divisors (756).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68195711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94489 + ... + 95207.

It is an arithmetic number, because the mean of its divisors is an integer number (1606500).

Almost surely, 2^68195712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68195712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102816000).

68195712 is an abundant number, since it is smaller than the sum of its proper divisors (137436288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68195712 is a wasteful number, since it uses less digits than its factorization.

68195712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 756 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 68195712 is about 8258.0695080630. The cubic root of 68195712 is about 408.5567179034.

The spelling of 68195712 in words is "sixty-eight million, one hundred ninety-five thousand, seven hundred twelve".