68820343 has 2 divisors, whose sum is σ = 68820344. Its totient is φ = 68820342.

The previous prime is 68820329. The next prime is 68820379. The reversal of 68820343 is 34302886.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68820343 is a prime.

It is a super-2 number, since 2×68820343² = 9472479221275298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68820299 and 68820308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68820043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34410171 + 34410172.

It is an arithmetic number, because the mean of its divisors is an integer number (34410172).

Almost surely, 2^68820343 is an apocalyptic number.

68820343 is a deficient number, since it is larger than the sum of its proper divisors (1).

68820343 is an equidigital number, since it uses as much as digits as its factorization.

68820343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 68820343 is about 8295.8027339131. The cubic root of 68820343 is about 409.8003052906.

The spelling of 68820343 in words is "sixty-eight million, eight hundred twenty thousand, three hundred forty-three".