68842250 has 32 divisors (see below), whose sum is σ = 129364560. Its totient is φ = 27432000.

The previous prime is 68842247. The next prime is 68842253. The reversal of 68842250 is 5224886.

It is an interprime number because it is at equal distance from previous prime (68842247) and next prime (68842253).

It can be written as a sum of positive squares in 8 ways, for example, as 5909761 + 62932489 = 2431^2 + 7933^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68842250.

It is not an unprimeable number, because it can be changed into a prime (68842253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126980 + ... + 127520.

Almost surely, 2^68842250 is an apocalyptic number.

68842250 is a deficient number, since it is larger than the sum of its proper divisors (60522310).

68842250 is a wasteful number, since it uses less digits than its factorization.

68842250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 68842250 is about 8297.1229953521. The cubic root of 68842250 is about 409.8437834372.

The spelling of 68842250 in words is "sixty-eight million, eight hundred forty-two thousand, two hundred fifty".