68444375 has 20 divisors (see below), whose sum is σ = 87646944. Its totient is φ = 53400000.

The previous prime is 68444371. The next prime is 68444377. The reversal of 68444375 is 57344486.

It is not a de Polignac number, because 68444375 - 2² = 68444371 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68444371) 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 19 ways as a sum of consecutive naturals, for example, 24290 + ... + 26960.

Almost surely, 2^68444375 is an apocalyptic number.

68444375 is a deficient number, since it is larger than the sum of its proper divisors (19202569).

68444375 is an equidigital number, since it uses as much as digits as its factorization.

68444375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732 (or 2717 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 68444375 is about 8273.1115669982. Note that the first 3 decimals coincide. The cubic root of 68444375 is about 409.0526909677.

The spelling of 68444375 in words is "sixty-eight million, four hundred forty-four thousand, three hundred seventy-five".