68932919 has 4 divisors (see below), whose sum is σ = 75199560. Its totient is φ = 62666280.

The previous prime is 68932889. The next prime is 68932921. The reversal of 68932919 is 91923986.

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

It is a cyclic number.

It is not a de Polignac number, because 68932919 - 2⁸ = 68932663 is a prime.

It is a super-2 number, since 2×68932919² = 9503494643721122, 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 (68932939) 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, 3133304 + ... + 3133325.

It is an arithmetic number, because the mean of its divisors is an integer number (18799890).

Almost surely, 2^68932919 is an apocalyptic number.

68932919 is a deficient number, since it is larger than the sum of its proper divisors (6266641).

68932919 is a wasteful number, since it uses less digits than its factorization.

68932919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266640.

The product of its digits is 209952, while the sum is 47.

The square root of 68932919 is about 8302.5850793593. The cubic root of 68932919 is about 410.0236333789.

The spelling of 68932919 in words is "sixty-eight million, nine hundred thirty-two thousand, nine hundred nineteen".