68144315 has 4 divisors (see below), whose sum is σ = 81773184. Its totient is φ = 54515448.

The previous prime is 68144267. The next prime is 68144353. The reversal of 68144315 is 51344186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51344186 = 2 ⋅25672093.

It is a cyclic number.

It is not a de Polignac number, because 68144315 - 2⁸ = 68144059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6814427 + ... + 6814436.

It is an arithmetic number, because the mean of its divisors is an integer number (20443296).

Almost surely, 2^68144315 is an apocalyptic number.

68144315 is a deficient number, since it is larger than the sum of its proper divisors (13628869).

68144315 is a wasteful number, since it uses less digits than its factorization.

68144315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13628868.

The product of its digits is 11520, while the sum is 32.

The square root of 68144315 is about 8254.9569956481. The cubic root of 68144315 is about 408.4540532512.

The spelling of 68144315 in words is "sixty-eight million, one hundred forty-four thousand, three hundred fifteen".