68409315 has 48 divisors (see below), whose sum is σ = 128445408. Its totient is φ = 33481728.

The previous prime is 68409311. The next prime is 68409317. The reversal of 68409315 is 51390486.

It is not a de Polignac number, because 68409315 - 2² = 68409311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68409315.

It is not an unprimeable number, because it can be changed into a prime (68409311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196972 + ... + 197318.

It is an arithmetic number, because the mean of its divisors is an integer number (2675946).

Almost surely, 2^68409315 is an apocalyptic number.

68409315 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68409315 is a deficient number, since it is larger than the sum of its proper divisors (60036093).

68409315 is a wasteful number, since it uses less digits than its factorization.

68409315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 68409315 is about 8270.9923830215. The cubic root of 68409315 is about 408.9828345488.

The spelling of 68409315 in words is "sixty-eight million, four hundred nine thousand, three hundred fifteen".