68513375 has 16 divisors (see below), whose sum is σ = 97720896. Its totient is φ = 46980000.

The previous prime is 68513371. The next prime is 68513377. The reversal of 68513375 is 57331586.

It is not a de Polignac number, because 68513375 - 2² = 68513371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68513371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38276 + ... + 40025.

It is an arithmetic number, because the mean of its divisors is an integer number (6107556).

Almost surely, 2^68513375 is an apocalyptic number.

68513375 is a deficient number, since it is larger than the sum of its proper divisors (29207521).

68513375 is an equidigital number, since it uses as much as digits as its factorization.

68513375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78323 (or 78313 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 68513375 is about 8277.2806524848. The cubic root of 68513375 is about 409.1901025831.

The spelling of 68513375 in words is "sixty-eight million, five hundred thirteen thousand, three hundred seventy-five".