68356224 has 160 divisors (see below), whose sum is σ = 214750800. Its totient is φ = 21523968.

The previous prime is 68356217. The next prime is 68356231. The reversal of 68356224 is 42265386.

It is an interprime number because it is at equal distance from previous prime (68356217) and next prime (68356231).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 196819 + ... + 197165.

Almost surely, 2^68356224 is an apocalyptic number.

68356224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68356224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107375400).

68356224 is an abundant number, since it is smaller than the sum of its proper divisors (146394576).

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

68356224 is a wasteful number, since it uses less digits than its factorization.

68356224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 371 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 68356224 is about 8267.7822903122. The cubic root of 68356224 is about 408.8770062359.

The spelling of 68356224 in words is "sixty-eight million, three hundred fifty-six thousand, two hundred twenty-four".