68736819 has 8 divisors (see below), whose sum is σ = 92594320. Its totient is φ = 45351936.

The previous prime is 68736809. The next prime is 68736821. The reversal of 68736819 is 91863786.

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

It is not a de Polignac number, because 68736819 - 2⁴ = 68736803 is a prime.

It is a super-2 number, since 2×68736819² = 9449500572477522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68736809) 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, 117814 + ... + 118395.

It is an arithmetic number, because the mean of its divisors is an integer number (11574290).

Almost surely, 2^68736819 is an apocalyptic number.

68736819 is a deficient number, since it is larger than the sum of its proper divisors (23857501).

68736819 is a wasteful number, since it uses less digits than its factorization.

68736819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236309.

The product of its digits is 435456, while the sum is 48.

The square root of 68736819 is about 8290.7670935807. The cubic root of 68736819 is about 409.6344530848.

The spelling of 68736819 in words is "sixty-eight million, seven hundred thirty-six thousand, eight hundred nineteen".