68081420 has 24 divisors (see below), whose sum is σ = 155968848. Its totient is φ = 24756800.

The previous prime is 68081411. The next prime is 68081423. The reversal of 68081420 is 2418086.

It is not an unprimeable number, because it can be changed into a prime (68081423) 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, 154511 + ... + 154950.

It is an arithmetic number, because the mean of its divisors is an integer number (6498702).

Almost surely, 2^68081420 is an apocalyptic number.

It is an amenable number.

68081420 is an abundant number, since it is smaller than the sum of its proper divisors (87887428).

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

68081420 is a wasteful number, since it uses less digits than its factorization.

68081420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309481 (or 309479 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 68081420 is about 8251.1465869902. The cubic root of 68081420 is about 408.3283512743.

It can be divided in two parts, 6808 and 1420, that added together give a palindrome (8228).

The spelling of 68081420 in words is "sixty-eight million, eighty-one thousand, four hundred twenty".