68299924 has 72 divisors (see below), whose sum is σ = 153982080. Its totient is φ = 26208000.

The previous prime is 68299921. The next prime is 68299939. The reversal of 68299924 is 42999286.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68299921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170124 + ... + 170524.

It is an arithmetic number, because the mean of its divisors is an integer number (2138640).

Almost surely, 2^68299924 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 68299924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76991040).

68299924 is an abundant number, since it is smaller than the sum of its proper divisors (85682156).

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

68299924 is a wasteful number, since it uses less digits than its factorization.

68299924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 500 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 68299924 is about 8264.3768065112. The cubic root of 68299924 is about 408.7647214192.

It can be divided in two parts, 68 and 299924, that added together give a palindrome (299992).

The spelling of 68299924 in words is "sixty-eight million, two hundred ninety-nine thousand, nine hundred twenty-four".