68299308 has 192 divisors, whose sum is σ = 227082240. Its totient is φ = 17236800.

The previous prime is 68299307. The next prime is 68299313. The reversal of 68299308 is 80399286.

It is not an unprimeable number, because it can be changed into a prime (68299307) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 357493 + ... + 357683.

It is an arithmetic number, because the mean of its divisors is an integer number (1182720).

Almost surely, 2^68299308 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 68299308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113541120).

68299308 is an abundant number, since it is smaller than the sum of its proper divisors (158782932).

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

68299308 is a wasteful number, since it uses less digits than its factorization.

68299308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 68299308 is about 8264.3395380393. The cubic root of 68299308 is about 408.7634925266.

The spelling of 68299308 in words is "sixty-eight million, two hundred ninety-nine thousand, three hundred eight".