68146819 has 8 divisors (see below), whose sum is σ = 73643472. Its totient is φ = 62686560.

The previous prime is 68146763. The next prime is 68146843. The reversal of 68146819 is 91864186.

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

It is a cyclic number.

It is not a de Polignac number, because 68146819 - 2⁹ = 68146307 is a prime.

It is a super-2 number, since 2×68146819² = 9287977879637522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68146889) 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 7 ways as a sum of consecutive naturals, for example, 5137 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (9205434).

Almost surely, 2^68146819 is an apocalyptic number.

68146819 is a deficient number, since it is larger than the sum of its proper divisors (5496653).

68146819 is a wasteful number, since it uses less digits than its factorization.

68146819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197.

The product of its digits is 82944, while the sum is 43.

The square root of 68146819 is about 8255.1086607022. The cubic root of 68146819 is about 408.4590561455.

The spelling of 68146819 in words is "sixty-eight million, one hundred forty-six thousand, eight hundred nineteen".