68356388 has 12 divisors (see below), whose sum is σ = 126660492. Its totient is φ = 32167680.

The previous prime is 68356367. The next prime is 68356403. The reversal of 68356388 is 88365386.

It can be written as a sum of positive squares in 2 ways, for example, as 59876644 + 8479744 = 7738^2 + 2912^2 .

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, 502553 + ... + 502688.

It is an arithmetic number, because the mean of its divisors is an integer number (10555041).

Almost surely, 2^68356388 is an apocalyptic number.

68356388 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68356388 is a deficient number, since it is larger than the sum of its proper divisors (58304104).

68356388 is a wasteful number, since it uses less digits than its factorization.

68356388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005262 (or 1005260 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The square root of 68356388 is about 8267.7922083226. The cubic root of 68356388 is about 408.8773332277.

The spelling of 68356388 in words is "sixty-eight million, three hundred fifty-six thousand, three hundred eighty-eight".