68385851 has 4 divisors (see below), whose sum is σ = 69349104. Its totient is φ = 67422600.

The previous prime is 68385841. The next prime is 68385853. The reversal of 68385851 is 15858386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68385851 - 2¹⁸ = 68123707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68385853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481520 + ... + 481661.

It is an arithmetic number, because the mean of its divisors is an integer number (17337276).

Almost surely, 2^68385851 is an apocalyptic number.

68385851 is a deficient number, since it is larger than the sum of its proper divisors (963253).

68385851 is an equidigital number, since it uses as much as digits as its factorization.

68385851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963252.

The product of its digits is 230400, while the sum is 44.

The square root of 68385851 is about 8269.5738100582. The cubic root of 68385851 is about 408.9360696182.

The spelling of 68385851 in words is "sixty-eight million, three hundred eighty-five thousand, eight hundred fifty-one".