68353893 has 6 divisors (see below), whose sum is σ = 98733414. Its totient is φ = 45569256.

The previous prime is 68353891. The next prime is 68353927. The reversal of 68353893 is 39835386.

It can be written as a sum of positive squares in only one way, i.e., 67617729 + 736164 = 8223^2 + 858^2 .

It is not a de Polignac number, because 68353893 - 2¹ = 68353891 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68353891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3797430 + ... + 3797447.

It is an arithmetic number, because the mean of its divisors is an integer number (16455569).

Almost surely, 2^68353893 is an apocalyptic number.

It is an amenable number.

68353893 is a deficient number, since it is larger than the sum of its proper divisors (30379521).

68353893 is a wasteful number, since it uses less digits than its factorization.

68353893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594883 (or 7594880 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 68353893 is about 8267.6413202315. The cubic root of 68353893 is about 408.8723585093.

The spelling of 68353893 in words is "sixty-eight million, three hundred fifty-three thousand, eight hundred ninety-three".