68339919 has 4 divisors (see below), whose sum is σ = 91119896. Its totient is φ = 45559944.

The previous prime is 68339917. The next prime is 68339963. The reversal of 68339919 is 91993386.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68339919 - 2¹ = 68339917 is a prime.

It is a super-2 number, since 2×68339919² = 9340689057853122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68339917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11389984 + ... + 11389989.

It is an arithmetic number, because the mean of its divisors is an integer number (22779974).

Almost surely, 2^68339919 is an apocalyptic number.

68339919 is a deficient number, since it is larger than the sum of its proper divisors (22779977).

68339919 is a wasteful number, since it uses less digits than its factorization.

68339919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22779976.

The product of its digits is 314928, while the sum is 48.

The square root of 68339919 is about 8266.7961750608. The cubic root of 68339919 is about 408.8444938601.

The spelling of 68339919 in words is "sixty-eight million, three hundred thirty-nine thousand, nine hundred nineteen".