68937823 has 4 divisors (see below), whose sum is σ = 69200208. Its totient is φ = 68675440.

The previous prime is 68937811. The next prime is 68937881. The reversal of 68937823 is 32873986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32873986 = 2 ⋅16436993.

It is a cyclic number.

It is not a de Polignac number, because 68937823 - 2²¹ = 66840671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68937223) 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, 130798 + ... + 131323.

It is an arithmetic number, because the mean of its divisors is an integer number (17300052).

Almost surely, 2^68937823 is an apocalyptic number.

68937823 is a deficient number, since it is larger than the sum of its proper divisors (262385).

68937823 is a wasteful number, since it uses less digits than its factorization.

68937823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262384.

The product of its digits is 435456, while the sum is 46.

The square root of 68937823 is about 8302.8804038117. The cubic root of 68937823 is about 410.0333563978.

The spelling of 68937823 in words is "sixty-eight million, nine hundred thirty-seven thousand, eight hundred twenty-three".