68605420 has 24 divisors (see below), whose sum is σ = 155154384. Its totient is φ = 25331136.

The previous prime is 68605367. The next prime is 68605429. The reversal of 68605420 is 2450686.

It is not an unprimeable number, because it can be changed into a prime (68605429) 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, 131674 + ... + 132193.

It is an arithmetic number, because the mean of its divisors is an integer number (6464766).

Almost surely, 2^68605420 is an apocalyptic number.

It is an amenable number.

68605420 is an abundant number, since it is smaller than the sum of its proper divisors (86548964).

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

68605420 is a wasteful number, since it uses less digits than its factorization.

68605420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263889 (or 263887 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 68605420 is about 8282.8388853098. The cubic root of 68605420 is about 409.3732641381.

The spelling of 68605420 in words is "sixty-eight million, six hundred five thousand, four hundred twenty".