68853643 has 2 divisors, whose sum is σ = 68853644. Its totient is φ = 68853642.

The previous prime is 68853601. The next prime is 68853647. The reversal of 68853643 is 34635886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68853643 - 2²¹ = 66756491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68853643.

It is not a weakly prime, because it can be changed into another prime (68853647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34426821 + 34426822.

It is an arithmetic number, because the mean of its divisors is an integer number (34426822).

Almost surely, 2^68853643 is an apocalyptic number.

68853643 is a deficient number, since it is larger than the sum of its proper divisors (1).

68853643 is an equidigital number, since it uses as much as digits as its factorization.

68853643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The square root of 68853643 is about 8297.8095302315. The cubic root of 68853643 is about 409.8663911268.

It can be divided in two parts, 68853 and 643, that added together give a palindrome (69496).

The spelling of 68853643 in words is "sixty-eight million, eight hundred fifty-three thousand, six hundred forty-three".