68365819 has 24 divisors (see below), whose sum is σ = 76809600. Its totient is φ = 60739200.

The previous prime is 68365799. The next prime is 68365841. The reversal of 68365819 is 91856386.

It is a de Polignac number, because none of the positive numbers 2^k-68365819 is a prime.

It is a super-2 number, since 2×68365819² = 9347770415081522, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (311040) is a multiple of the sum of its prime divisors (240).

It is not an unprimeable number, because it can be changed into a prime (68365859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 458757 + ... + 458905.

It is an arithmetic number, because the mean of its divisors is an integer number (3200400).

Almost surely, 2^68365819 is an apocalyptic number.

68365819 is a deficient number, since it is larger than the sum of its proper divisors (8443781).

68365819 is a wasteful number, since it uses less digits than its factorization.

68365819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 240 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 68365819 is about 8268.3625343837. The cubic root of 68365819 is about 408.8961363707.

The spelling of 68365819 in words is "sixty-eight million, three hundred sixty-five thousand, eight hundred nineteen".