68306620 has 24 divisors (see below), whose sum is σ = 143758944. Its totient is φ = 27262656.

The previous prime is 68306597. The next prime is 68306621. The reversal of 68306620 is 2660386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68306621) 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, 6234 + ... + 13246.

It is an arithmetic number, because the mean of its divisors is an integer number (5989956).

Almost surely, 2^68306620 is an apocalyptic number.

It is an amenable number.

68306620 is an abundant number, since it is smaller than the sum of its proper divisors (75452324).

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

68306620 is a wasteful number, since it uses less digits than its factorization.

68306620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7509 (or 7507 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 68306620 is about 8264.7819087983. The cubic root of 68306620 is about 408.7780791654.

The spelling of 68306620 in words is "sixty-eight million, three hundred six thousand, six hundred twenty".