68818780 has 24 divisors (see below), whose sum is σ = 146971440. Its totient is φ = 27060480.

The previous prime is 68818747. The next prime is 68818781. The reversal of 68818780 is 8781886.

It is a super-3 number, since 3×68818780³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68818780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68818781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27981 + ... + 30340.

It is an arithmetic number, because the mean of its divisors is an integer number (6123810).

Almost surely, 2^68818780 is an apocalyptic number.

It is an amenable number.

68818780 is an abundant number, since it is smaller than the sum of its proper divisors (78152660).

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

68818780 is a wasteful number, since it uses less digits than its factorization.

68818780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58389 (or 58387 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 46.

The square root of 68818780 is about 8295.7085291131. The cubic root of 68818780 is about 409.7972029001.

The spelling of 68818780 in words is "sixty-eight million, eight hundred eighteen thousand, seven hundred eighty".