68445859 has 4 divisors (see below), whose sum is σ = 72472104. Its totient is φ = 64419616.

The previous prime is 68445857. The next prime is 68445899. The reversal of 68445859 is 95854486.

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 68445859 - 2¹ = 68445857 is a prime.

It is a super-2 number, since 2×68445859² = 9369671228495762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68445857) 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, 2013097 + ... + 2013130.

It is an arithmetic number, because the mean of its divisors is an integer number (18118026).

Almost surely, 2^68445859 is an apocalyptic number.

68445859 is a deficient number, since it is larger than the sum of its proper divisors (4026245).

68445859 is a wasteful number, since it uses less digits than its factorization.

68445859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026244.

The product of its digits is 1382400, while the sum is 49.

The square root of 68445859 is about 8273.2012546535. The cubic root of 68445859 is about 409.0556472847.

The spelling of 68445859 in words is "sixty-eight million, four hundred forty-five thousand, eight hundred fifty-nine".