68347420 has 12 divisors (see below), whose sum is σ = 143529624. Its totient is φ = 27338960.

The previous prime is 68347417. The next prime is 68347423. The reversal of 68347420 is 2474386.

It is an interprime number because it is at equal distance from previous prime (68347417) and next prime (68347423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68347423) 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 3 ways as a sum of consecutive naturals, for example, 1708666 + ... + 1708705.

It is an arithmetic number, because the mean of its divisors is an integer number (11960802).

Almost surely, 2^68347420 is an apocalyptic number.

It is an amenable number.

68347420 is an abundant number, since it is smaller than the sum of its proper divisors (75182204).

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

68347420 is a wasteful number, since it uses less digits than its factorization.

68347420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417380 (or 3417378 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 68347420 is about 8267.2498450210. The cubic root of 68347420 is about 408.8594515910.

The spelling of 68347420 in words is "sixty-eight million, three hundred forty-seven thousand, four hundred twenty".