68923749 has 8 divisors (see below), whose sum is σ = 95067360. Its totient is φ = 44364656.

The previous prime is 68923727. The next prime is 68923759. The reversal of 68923749 is 94732986.

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

It is a cyclic number.

It is not a de Polignac number, because 68923749 - 2⁸ = 68923493 is a prime.

It is a super-3 number, since 3×68923749³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68923698 and 68923707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68923759) 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, 396027 + ... + 396200.

It is an arithmetic number, because the mean of its divisors is an integer number (11883420).

Almost surely, 2^68923749 is an apocalyptic number.

It is an amenable number.

68923749 is a deficient number, since it is larger than the sum of its proper divisors (26143611).

68923749 is a wasteful number, since it uses less digits than its factorization.

68923749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792259.

The product of its digits is 653184, while the sum is 48.

The square root of 68923749 is about 8302.0328233512. The cubic root of 68923749 is about 410.0054510479.

The spelling of 68923749 in words is "sixty-eight million, nine hundred twenty-three thousand, seven hundred forty-nine".