68451982 has 8 divisors (see below), whose sum is σ = 102732552. Its totient is φ = 34207800.

The previous prime is 68451973. The next prime is 68451983. The reversal of 68451982 is 28915486.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68451983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3769 + ... + 12292.

It is an arithmetic number, because the mean of its divisors is an integer number (12841569).

Almost surely, 2^68451982 is an apocalyptic number.

68451982 is a deficient number, since it is larger than the sum of its proper divisors (34280570).

68451982 is a wasteful number, since it uses less digits than its factorization.

68451982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18194.

The product of its digits is 138240, while the sum is 43.

The square root of 68451982 is about 8273.5712966046. The cubic root of 68451982 is about 409.0678446286.

The spelling of 68451982 in words is "sixty-eight million, four hundred fifty-one thousand, nine hundred eighty-two".