68818630 has 16 divisors (see below), whose sum is σ = 124707600. Its totient is φ = 27342112.

The previous prime is 68818621. The next prime is 68818639. The reversal of 68818630 is 3681886.

It is an interprime number because it is at equal distance from previous prime (68818621) and next prime (68818639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68818639) 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 7 ways as a sum of consecutive naturals, for example, 21604 + ... + 24583.

It is an arithmetic number, because the mean of its divisors is an integer number (7794225).

Almost surely, 2^68818630 is an apocalyptic number.

68818630 is a deficient number, since it is larger than the sum of its proper divisors (55888970).

68818630 is a wasteful number, since it uses less digits than its factorization.

68818630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46343.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 68818630 is about 8295.6994882891. The cubic root of 68818630 is about 409.7969051635.

The spelling of 68818630 in words is "sixty-eight million, eight hundred eighteen thousand, six hundred thirty".