68841820 has 12 divisors (see below), whose sum is σ = 144567864. Its totient is φ = 27536720.

The previous prime is 68841809. The next prime is 68841841. The reversal of 68841820 is 2814886.

It is a self number, because there is not a number n which added to its sum of digits gives 68841820.

It is a congruent number.

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, 1721026 + ... + 1721065.

It is an arithmetic number, because the mean of its divisors is an integer number (12047322).

Almost surely, 2^68841820 is an apocalyptic number.

It is an amenable number.

68841820 is an abundant number, since it is smaller than the sum of its proper divisors (75726044).

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

68841820 is a wasteful number, since it uses less digits than its factorization.

68841820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442100 (or 3442098 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 68841820 is about 8297.0970827151. The cubic root of 68841820 is about 409.8429301182.

The spelling of 68841820 in words is "sixty-eight million, eight hundred forty-one thousand, eight hundred twenty".