68563850 has 24 divisors (see below), whose sum is σ = 128800908. Its totient is φ = 27152000.

The previous prime is 68563823. The next prime is 68563853. The reversal of 68563850 is 5836586.

It can be written as a sum of positive squares in 6 ways, for example, as 61105489 + 7458361 = 7817^2 + 2731^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68563798 and 68563807.

It is not an unprimeable number, because it can be changed into a prime (68563853) 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 11 ways as a sum of consecutive naturals, for example, 1739 + ... + 11838.

Almost surely, 2^68563850 is an apocalyptic number.

68563850 is a deficient number, since it is larger than the sum of its proper divisors (60237058).

68563850 is a wasteful number, since it uses less digits than its factorization.

68563850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13690 (or 13685 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 68563850 is about 8280.3290997399. The cubic root of 68563850 is about 409.2905637484.

The spelling of 68563850 in words is "sixty-eight million, five hundred sixty-three thousand, eight hundred fifty".